Buttermilk Coffee Cake
To make 1/2 cup sour milk, place 1-1/2 teaspoons lemon juice or vinegar in a glass measuring cup. Add enough milk to make 1/2 cup total liquid; stir. Let mixture stand for 5 minutes before using.
Next time try folding one of the following into the batter: 1/4 cup dried cherries and 1/4 cup semisweet baking pieces; 1/2 cup raisins, dried cherries, or other chopped dried fruit; 1/4 cup shredded coconut and 1/4 cup chopped macadamia nuts; 1/2 cup toffee pieces; 1/4 cup chopped peanuts and 1/4 cup miniature semisweet chocolate pieces; 1 cup fresh blueberries, raspberries, or coarsely chopped strawberries.