It comes down to four numbers
Good coffee at home is mostly about a handful of variables: how finely you grind, how hot the water is, how much coffee you use, and how long it stays in contact with that water. Get those roughly right and a good bag tastes like the tasting notes on the label. Miss them and even a great roast comes out thin, sour or bitter. The four guides below cover the methods most people already have on the counter — a cone dripper, a French press, a drip brewer and a jar for cold brew — with starting numbers for each.
Grind fresh, store it dark
Buy whole bean when you can and grind just before you brew; ground coffee starts losing its aromatics within minutes of hitting air. Keep the bag sealed, out of direct light and away from the stove, and skip the refrigerator, where moisture and food odors get in. A 12 oz bag is about sixteen cups at our standard ratios, so a bag stays fresh through the week it takes to drink it. If you buy ground, choose the grind for the method you actually use rather than the one you plan to try.
Match the numbers to the roast
Light and medium roasts, like Graham Cracker and the Roastmaster's Blend, reward hotter water — 200 to 205°F — and a slightly finer grind, which pulls out the sweetness and fruit. Darker roasts, like the Seattle Blend, are happiest a few degrees cooler and a touch coarser, because they give up their flavor easily and turn bitter when pushed. Flavored bags such as Chocolate Macadamia Nut, Abie's Irish Cream and Jingle Bell Java brew best a little stronger than you'd expect, so the coffee underneath still comes through the flavoring. Weigh your coffee if you have a scale, and treat the ratios here as starting points to nudge, not rules to obey.