Fresh and frozen fruits and vegetables such as blueberries, strawberries and kale are commonly used in smoothies. Yogurt or kefir is usually used as the base of a smoothie.
There are countless smoothie ingredients. Bananas are often used to thicken and add texture to smoothies. Honey or agave nectar can be added for additional sweetness. Coconut oil is commonly used to add a bit of healthy fat and flavor. Any leafy green vegetable can be added to a smoothie. Soymilk, almond milk and coconut water can be used as alternatives to yogurt or kefir. Peanut butter can be added to boost protein content.