Why do we go through the trouble of using scales for every cup of coffee at Safehouse Coffee? Instead of burdening you with the thousands of words needed to flesh this out completely, here are a few words and a picture, which explains it quite succinctly.
~ coffee beans are different sizes, so dose them by weight instead of volume ~
What are we looking at here? These are three coffees on our menu that have extremely different roast profiles. How long a coffee is roasted, at what temperature, along what thermodynamic delta, to what finish temperature, and more, all change both the mass and the volume of a coffee bean.
Although these small piles of beans all weigh 10 grams (+/- 0.1g), their volumes are quite different. This is why if you measure your coffee dose volumetrically, say, with a scoop or a spoon, you will be using a very different amount of coffee from brew to brew. Bean size, moisture, lipid and sugar content, all play a role in what make up the flavors and aromas of a coffee.
For these reasons, we dose our coffee by weight, so that we have repeatable inputs in our coffee brewing recipes. Knowing your inputs and brewing recipes allows you to adjust your cup of coffee precisely according to your personal taste. A simple 0.1 gram resolution digital scale will revolutionize your daily coffee.