Adapted slightly from Alton Brown
2 cups flour
4 tsp. baking powder
1/4 tsp. baking soda
3/4 tsp. salt
4 tbsp. butter
1 cup buttermilk, chilled
1. Preheat oven to 450 degrees
2. Combine flour, baking powder, baking soda, and salt in a large bowl. Cut in the butter using a pastry cutter or two forks until the dough resembles course crumbs. Make a well in the center, pour in buttermilk. Mix only until the dough comes together. No more than absolutely necessary.
3. Turn the dough out onto a floured surface. Knead 5-6 times and press to a 1-inch thickness. Cut out biscuits with a 2-inch round cutter (the rim of a glass will also work in a pinch). Place biscuits on a baking sheet so their edges just touch. Reform dough and repeat.
4. Bake until fluffy and light golden brown, about 15-20 minutes. Serve warm with more butter, jam, or garlic chive butter.
1/4 cup unsalted butter (homemade if possible)
1 small clove garlic, finely minced
2 tbsp. chives, finely chopped
Bring butter to room temperature. Mix in garlic, chives, and salt. Let stand for several minutes to blend flavors. Spread on warm buttermilk biscuits.