The primary ingredient in a fruit smoothie is typically fruit. Common choices include bananas, berries, mangoes, or peaches, which are blended together with liquid such as water, yogurt, or juice. The fruits provide natural sweetness, flavor, and essential vitamins and minerals, making smoothies a popular choice for both breakfast and snacks. Additionally, many people like to add ingredients like spinach or protein powder to enhance the nutritional value. The combination is then blended until smooth for a refreshing and healthful drink.