Combine and rinse raspberries, blueberries, and blackberries in a colander and set aside to drain completely. Gently pat dry if needed. (Do not crush berries) Set aside. NOTE: If you are a berry lover and want to enjoy a mouthful of berries in every bite, you may add up to 24 ounces total. However, it may not look as pretty because the berries will start to run. If you don’t mind a little imperfection, feel free to take this route.