Home Coffee Brewing: The Grind
This is the third in a series of blog posts that will teach you how to confidently brew exceptional coffee at home.
So far we have discussed the importance of the two main ingredients in coffee; the beans themselves, and the water that brews them. How the beans are ground is just as important to coffee brewing as the water and coffee selection. Slight variations in the grind setting can have dramatically different results in the final product. Let’s get down to the details, and help to really fine-tune the process.
To grind, or not to grind?
When buying your beans, you have the choice of buying pre-ground or whole bean. At a micro roaster all of the beans are likely whole bean, and your barista will grind them for you at the time of sale if you need. Is there a difference in quality one-way or the other? You bet.
Why grind at home? A few days after the coffee is roasted, it begins to lose flavor. When the beans are ground the surface area of the beans is increased exponentially, allowing more of that flavor and aroma dissipate and escape! Most reputable coffee shops will only grind their beans moments before they start the brewing process to retain that flavor you have come to expect. Grinding your beans at home will dramatically increase the freshness and flavor profile of the coffee you have brought home to enjoy. There are many types of grinders out there, so which one is best?
At the entry level, you can find cheap blade grinders which use a propeller like action to chop up the coffee. They are entry level grinders that allow you to grind only what you need for the coffee you are making at the time, but they fall short on another important quality; consistency. These grinders have a major fault when it comes to grind uniformity. They create lots of boulders (huge chunks) and fines (powder) at the same time. Although we used to carry them on our shelves, we have replaced them with a line of manual and electric burr grinders.
A burr grinder will allow for more control over the coarseness of grind, and provide for a much more consistent result. Most burr grinders will have a ‘hopper’ or chamber where the whole beans will be stored and fed into the grinder as needed. Quality and consistency are the benchmarks that should be expected from most burr grinders. There is a wide price range in this category that varies depending on features and manufacturer reputation. If there is room in your budget, and you are looking for a drastic improvement in your home brewing, burr grinders are the way to go.
When it comes to choosing the proper grind for your coffee, everything will depend on your brewing method. There are as many ways to brew coffee as there are countries enjoying that coffee, and each one comes with its own unique style and grind. From the French Press with its course grind, to the Turkish coffee and its (almost) powder-like grind, there are limitless options and methods to prepare the beans for brewing. You should ask your barista about how to best grind the coffee for your particular method, and then experiment a little bit until you find that ‘sweet spot.’
So our best advice to you is to spend a few extra dollars and get a grinder. You will notice an immediate improvement in your brewing quality, and get more enjoyment out of those specialty beans you are buying. Grinding fresh is one of the most simple things you can do to step up the home coffee quality.
Home Coffee Brewing: By the Numbers