To make a smoothie in a blender, add 2 to 3 cups of frozen fruit, 1/2 cup of yogurt and 1 cup of a liquid ingredient such as fruit juice. Blend the smoothie in short bursts until it reaches the desired consistency and all of the ingredients are thoroughly combined.
Smoothies come with many options for ingredients, though most contain fruit. Fresh fruit is fine, but frozen fruit thickens the smoothie and makes a frosty consistency. Ice cubes produce a thicker texture when added to fresh fruit. Berries and bananas are popular smoothie ingredients, and greens such as spinach or kale provide additional nutrients. Avocados are also popular and provide a dose of fat to a smoothie.
The choice of liquid ingredient depends on personal preference. Fruit juice is a good option, but adds a lot of sugar. Other options include skim milk, soy milk, almond milk, coconut water or water. Yogurt adds protein and creaminess to a smoothie. In addition, adding a source of protein makes the smoothie a well-rounded treat. Peanut butter is one way to add protein, while another is to blend in protein powder. Add the powder after blending the other ingredients so it doesn't over-blend. Add more liquid to thin the smoothie or more fruit or ice to thicken it.