When asked about how much coffee to use, most people will recite the following - two tablespoons of ground coffee for each six ounces of water. For espresso, use 7-8 grams for a single shot, and 14-16 grams for a double shot. What's important to remember is that taste is very subjective, so once you've established your personal cup taste - stick to it. If you find a coffee that's too strong, add a little hot water to the brewed coffee or try changing to a lighter bean or roast.