Inefficient Efficiency

Drinking 2 to 4 cups of coffee a day could actually be good for you, studies suggest | CBC News

The coffee can be decaffeinated and still offer the coffee-drinker health benefits, recent research suggests.

Three to four cups of coffee a day linked to longer life

Drinking coffee is 'more likely to benefit health than to harm it' for a range of health outcomes, say researchers.

Coffee Science: How to Make the Best Pour-Over Coffee at Home

A step-by-step guide to making pour-over coffee at home (and what gear to get). We’ve got recommendations for kettles, drippers, and more.

How to Choose an Espresso Machine

☕ Quick Take Choose your ideal espresso machine by understanding three key decisions: manual vs. super-automatic vs. semi-automatic operation, single vs. dual boiler vs. heat exchanger system, and must-have features that match your coffee routine. Semi-automatic machines offer the best balance of control and affordability for café-quality espresso at home Dual boiler machines let you steam milk and pull shots simultaneously — ideal for making multiple lattes back-to-back Heat exchanger machines deliver dual-boiler convenience in a smaller, budget-friendly package (but require a cooling flush before each shot) Single boiler machines work best for straight espresso drinkers or tight budgets, with gentler steam pressure that's easier for beginners Here at Clive, we want to help you take the guesswork out of choosing a machine so that you can feel confident making espresso at home and have fun with it, too! Machines aren’t one-size-fits-all. You need to decide what features you want or, more importantly, which you may not need. We've got a lot for you to learn, but by the time you're done, we're certain you'll feel guided in the right direction for which type of machine is best for you — if not exactly which one! Go ahead, make yourself a cup of coffee... and dream of how much better it's going to be made on your new machine. What we'll cover in Part 1: Three main espresso machine types   • Manual   • Super-Automatic   • Semi-Automatic Three main boiler types    • Single Boilers   • Dual Boilers   • Heat Exchangers Shopping by Features   • PIDs   • Volumetric Programmability   • Pre-infusion   • Flow Control   • Style What we'll cover in Part 2: Group Head Type   • Saturated   • Semi-saturated   • E61 Portafilter Size   • 53mm vs 58mm Pump Type   • Vibratory   • Rotary Budget   • Machine   • Grinder   • Scale 1. Manual, super-automatic, and semi-automatic espresso machines Espresso machines can be broken down into three main types — all of which can make great coffee, but the experience is different.  Manual espresso machines Manual machines or lever machines require you to pull the lever to build pressure to pull a shot. You’re either confused or mesmerized by them. You’ll know whether they are for you or not. They are about tradition, pure espresso, and recreating a classic Italian espresso, rich in crema.  Super-automatic espresso machines Super-automatics espresso machines do everything for you with the touch of a button. They are for those wanting a latte by snapping their fingers. You don’t want to go into Starbucks — you don’t want to be a barista, necessarily, but you love your coffee. Super-autos can be as basic as pulling a shot and steaming milk and as fancy as creating your custom drink and recipe, choosing how frothy you want your milk. The downside is that you lose your ability to change how your shots are pulling and fine-tune for flavor. People who buy super autos typically aren’t espresso purists, so this may not matter to you as much. It’s about the convenience of café coffee without the barista-ing.  Semi-automatic espresso machines Semi-automatics machines require the baristas to grind, tamp, and steam milk, but they work with a pump to build the pressure rather than using a lever like a fully manual. They are what we primarily carry at Clive. They are the most affordable way to achieve café-quality drinks at home. As the barista, you have to — or get to — control how your shot pulls by making adjustments to your grinder and recipe until it tastes right to you. You can find grinders and accessories that make this process easier. We’re here to help build your dream setup and teach you how to use it.  If you know you want a manual or super-auto, you can stop here because we have two options for you here at Clive. Clive's manual espresso machine — Profitec Pro 800 Clive's super-automatic espresso machine — Breville Oracle Touch If you’re interested in a semi-automatic espresso machine, keep reading! 2. Single boilers, dual boilers, and heat exchange espresso machines Ultimately, you want to find something that is going to fit your needs and provide you with the routine that you want. Single boilers, heat exchangers, and dual boilers function differently from one another when making a latte, meaning your workflow will be different. Single Boilers A single boiler espresso machine uses one boiler for both steaming milk and pulling a shot of espresso. This means there’s a little waiting in between pulling shots and steaming milk. Steam pressure on single boilers is usually less strong than on other machines. This means that it takes longer to steam a pitcher of milk, which can be more approachable to newer baristas. These machines are generally smaller, and typically function off an internal water reservoir. Price point: $850 to $1800 at Clive. Who single boiler machines are for: People who make very few milk-based drinks, are straight espresso drinkers, are on a tight budget, have space constraints, or are just looking for a beginner espresso machine would choose a single boiler. Shop single boiler espresso machines. Dual Boilers Dual boiler machines have two boilers — one is dedicated to steaming milk, and the other for pulling shots. Having dedicated boilers allows baristas to pull shots and steam milk simultaneously or instantly back to back with no waiting. Dual boilers oftentimes offer more features, such as the ability to plumb to a waterline rather than using a water reservoir. Price point: $1800 to $7900 at Clive.  Who dual boiler machines are for: If you make a lot of milk-based drinks, want a commercial feel, intend on making several drinks in a row, need to direct plumb a machine, or want some of the features that these machines often include (more on that soon), you should consider a dual boiler.  Shop dual boiler espresso machines. Heat Exchangers Heat exchangers fall somewhere in the middle. Like a single-boiler, they have one boiler and are usually smaller in size, but they function more closely to a dual boiler because you can still steam milk and pull shots at the same time. Two things to keep in mind with heat exchangers. First, you should run a cooling flush, running water through the group head for five to ten seconds before pulling a shot. Secondly, if you change the temperature or pressure, you’re raising or lowering it for both steaming and brewing, it cannot be done independently. Price point: $1600 to $2200 at Clive. Who heat exchange machines are for: Heat exchangers are a great option for people looking for something smaller that doesn’t cost an arm and a leg — but still want a fast machine with lots of steaming power.  Shop heat exchange espresso machines. There are a lot of similarities in internal parts, functionalities, size, price points, and features between machines in the same category. Once you decide which type of espresso machine is right for you, we’ll explore the features that can ultimately help you choose.  3. Shopping by features  PIDS One of the most talked about features of an espresso machine — a PID. PIDs display the temperature of your boilers, double as a shot timer, and often include other programmable features like auto off and on times, pre-infusion, eco modes, etc.  Water temperature affects how coffee extracts and therefore tastes. Machines with PIDs allow you to control brewing temperature to aid in coffee extraction. Temperature control is great when changing your recipe or grind size isn’t enough. If you don’t anticipate being the type of person who nerds out and wants to adjust brew temperature, PIDs may not seem necessary but are still nice to have, displaying when the machine has fully heated, working as a shot timer, low water notifications and so on. Without one, you can rely on your pressure gauge and use a timer on an espresso scale for quality control. You can make great coffee with or without a PID.  Learn how brewing temperature affects coffee extraction in our article: How to Brew Dark, Medium, and Light Roasted Coffees. Shop machines with PIDs. Volumetric Programmability  Machines with volumetric programmability offer an extra level of convenience to semi-automatic machines. They can be programmed to stop shots automatically once they have dispensed a specific water volume. Volumetric programming automates part of the process but still gives you all the control with the push of a button. Shop machines with volumetric programmability.  Pre-infusion Pre-infusion refers to the process of saturating the entire puck of coffee with water before introducing a full 9 bar of pressure to your shot. This can help prepare the coffee in a way that reduces channeling or uneven extraction while the espresso is pulling. Pre-infusion can be a good thing for new baristas as it can help minimize user errors. However, when you’re just getting started and learning how to make coffee at home, we always advise baristas to simplify as much as possible before adding to the variables that can affect how a shot of espresso pulls. Machines with timed pre-infusion are great — the more constant variables you have, the better.  Learn more about pre-infusion and how it works: What is Pre-Infusion.  Shop machines with pre-infusion. Flow Control Flow control is a device and paddle that attaches to the top of the E61 group head that restricts and releases water flow as you move its paddle back and forth to help aid in coffee extraction. Playing with water flow rate and pressure, which are connected, can be a fun tool to experiment with once you get your footing and feel comfortable with the basics. Changing the pressure and flow of water can accentuate different flavor profiles and be fun for those really wanting to nerd out on straight espresso. Unless you’ve had experience with flow control or have done your research thoroughly and are ready to experiment, go through bags of coffee, and drink a lot of espresso as you taste the difference in each shot, flow control can be something you experiment with down the line. Learn about All Things Flow Control. Shop machines with flow control. Style We're just going to come out and say it — it’s 100% okay for you to choose an espresso machine based on how it looks. Some people are drawn toward the more commercial-looking machines, while others choose based on color, chrome, group head type, levers vs. knobs, and buttons vs. paddles. It’s hard to know which you may prefer until you get your hands on it yourself. Some think it’s easier to operate machines that have joysticks, and others prefer knobs that spin open and close. Some like the manual feel of lifting a brew lever to start and stop a shot, and others are okay with pressing a button. Ultimately, you just need something that can keep up with your lifestyle and fit your space, budget, and aesthetic. Shop espresso machines to find your style. 4. Last things to consider A few last things to consider or at least be made aware of: group head type and size, pump types, and consideration to other necessities in your overall budget.  Group Head Type There are a few different group head types and sizes and lots of differing opinions on what’s best. Saturated, semi-saturated, and E61.    Saturated Saturated group heads are connected to the boiler. They are efficient at holding temperature, and what you’ll find on most commercial machines and on the GS3 and Rocket R Nine One. Semi-saturated Semi-saturated group heads are separated from the boiler by a heat exchange mechanism that directs water flow around the group head. Temperatures may be less stable, but they are easier to repair. The LUCCA A53, Profitec Pro 300, and Rancilio Silvia are all examples of a machine with a semi-saturated group head. E61 E61 group heads are easily recognizable, as the portafilter sits outside of the machine and is connected to a brew lever that operates it. E61 group heads cycle water around the group as a shot pulls to maintain incredible temperature stability. They also can be connected to flow control devices and are easy to maintain. The ECM Synchronika, Profitec Pro 700, and Lelit Bianca are all examples of E61 group heads.  Each type has its pros and cons and has ways around any temperature concerns and repairability. It’s nice to know what you’re getting, but it may not be at the top of your list of wants in a machine — and that’s okay and probably for the best. Unless you’re just into the looks of one, that is also A-OK. Portafilter size Don't get hung up on portafilter size. 58mm is the standard commercial size but many Breville machines are 54mm, and La Spaziale are 53mm. It’s important to know what you’re buying so you can get the right size accessories, but the portafilter size isn’t a reason to choose or stray from a machine, necessarily. You can pull great shots with both, as long as you have the right tools, such as a great grinder and accessories.  The Difference Between 53mm vs 58mm Portafilters. Pump type There are two types of pumps: vibratory and rotary. Each of them function differently to do the same thing.  Vibratory pumps vibrate to move water through the machine. They last about 5-10 years depending on use. They are a little louder by nature but pulling a shot of espresso takes about 30 seconds, so it’s up to you how important that is... Rotary pumps use a large motor to rotate a gear-like mechanism that generates pressure. They are more expensive, increasing the overall cost of the machine, and in the off chance they go bad, you’re looking at a little more spendy fix.  Shopping by pump type isn't very common and not something to get hung up on. If you'd like to learn more, check out How to Choose an Espresso Machine by Pump Type. Overall Budget Lastly, and most importantly, honestly. Save room in your budget for two of the most important parts of your success with home espresso: a great grinder and a scale.  You don’t need to save a specific amount or percent of your budget on a grinder, but you will not get great-tasting and consistent results with pre-ground coffee or a bad grinder. It’s better to get a less expensive machine with a better grinder than a more expensive machine with a horrible grinder. Keep an eye out for our guide on how to choose a grinder, but please, please, please take this advice seriously. Most of our tech calls stem from bad grinders and old coffee. Don't believe us? Read

Coffee in crisis: The bitter end of our favourite drink?

Drought, flooding, disease - climate change is already threatening the source of our caffeine fix. Are we facing the end of coffee as we know it, asks David Robson.

A Little Soulver Coffee Calculator — Sympolymathesy, by Chris Krycho

One of the many ways I use a great app in day-to-day life!

Everything I Am Afraid Might Happen If I Ask New Acquaintances to Get Coffee

No. 1: they will say no.

Unfair trade

Coursing through the veins of the modern world and the modern subject alike, coffee is the spirit of exploitation in brewed form.

Peet’s Coffee x SPIN Sessions: Where Coffee Culture Meets Music Culture - SPIN

Music-loving coffee drinkers have long known the importance of shifting a sluggish moment into a second wind. There’s always been a need for

There's A Silent Battle Brewing Over The Future Of The Coffee Label

Walk in to any “third-wave” coffee establishment, or even a mass market chain such as Starbucks, Peets or Nespresso, and you’re bound to encounter an overwhelming assortment of coffee varieties at all quality levels and price points. There are coffees labeled Single Varietal, Single Origin, Micro Lot, Small Batch and even Grand Cru.

Acute Effects of Coffee Consumption on Health among Ambulatory Adults

Coffee is one of the most commonly consumed beverages in the world, but the acute health effects of coffee consumption remain uncertain. We conducted a prospective, randomized, case-crossover trial...

The Science Behind Coffee and Why it's Actually Good for Your Health

Coffee isn't just warm and energizing, it may also be extremely good for you. In recent years, scientists have studied the effects of coffee on variou

The Quest For Caffeine You Can Have At Night

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Kenya and “the decline of the world’s greatest coffee”

During one of his “yes or no” Instagram Q&As, Scott Rao lamented the declining quality of Kenyan coffees over the last three years—a sentiment I’ve heard echoed by buyers across Europe, the US, and Australia. He kicked a different question over to me about whether cultivar or microclimate or process has the greatest cup impact, and I demurred, offering that the relationship is gestalt but that processing ultimately had the final say —invoking Kenya’s declining cup quality as an example.

Clumsy Goat Coffee - Coffee Beans, Machines & Barista Equipment UK

Discover freshly roasted coffee beans, barista gear, and home or commercial coffee machines to buy or lease. Free UK delivery over £100.