Does anyone have any tips for adding brewed espresso to recipes? It's easy enough when there's already water called for, since I can just replace that, but cookies and brownies and meringues rarely give me that luxury.
Also remember that coffee is an acid, which reacts with baking soda and baking powder in a different way than more neutral milk and water. So if you are replacing all or most of your liquid with espresso or coffee, you may need to adjust your leavener. See this post for more details on how baking soda and acid interact: Pantry Basics: What's the Difference Between Baking Soda and Baking Powder?.
Meringues are a different story, though. They are so limited in their moisture that adding a couple tablespoons of espresso will make a real difference. We suggest using ground espresso instead, or coffee extract. See our Coffee Meringue recipe here.
Any other suggestions for Mike?
(Images: The Coffee Brewers)