A frosty smoothie made from berries, yogurt and milk is a treat even though it's packed with wholesome nutrients. Using frozen fruit instead of ice cubes ensures that your smoothie is thick without sacrificing flavor. Smoothies are almost endlessly customizable, so once you get the hang of making them, get creative. Add a handful of spinach or kale for a healthy boost, or add a dash of cinnamon or nutmeg for a flavorful kick. Cooked oatmeal gives smoothies a silky texture. Have fun with ingredients when making your smoothie, and you'll never get bored.
Combine equal parts yogurt and milk and pour it into your blender. Adding the more liquid ingredients before the solid ingredients ensures that your smoothie blends easily.
Add 2 parts frozen mixed berries to the blender for every 1 part yogurt and milk. For example, if you used 1/2 cup each of yogurt and milk, you'll need 2 cups of frozen berries.
Sweeten your smoothie, if you wish, with a tablespoon or two of honey, maple syrup or agave nectar. A very ripe banana is also an excellent sweetener, and it has the added bonus of giving your smoothie an ultra-creamy consistency. If you're using sweetened or flavored yogurt, you may not need additional sweetener.
Cover the blender securely and start blending at the lowest speed. Allow the smoothie to blend until the largest chunks of fruit are broken up, and a vortex forms in the center. Slowly increase the speed until all the fruit is blended, and you've reached your desired consistency. Slowly increasing the speed in this manner prevents air bubbles from forming around the blade and ensures that your smoothie blends easily without your having to stir it by hand.
Taste the smoothie to see if the texture and flavor are to your liking. If it's too thin, add more fruit. If it's too thick, add more yogurt or milk. If it's a little bland, add another spoonful of sweetener or half a banana.