Choose your base liquid: water, milk, plant milk, yogurt, or juice
Add fruit: fresh or frozen bananas, berries, mango, pineapple, or peaches
Add vegetables if desired: spinach, kale, cucumber, or carrots
Add a protein source if desired: yogurt, protein powder, nut butter, or tofu
Add extras if desired: oats, chia seeds, flaxseed, honey, or spices
Put ingredients into a blender
Blend until smooth
Add more liquid if the smoothie is too thick
Add more fruit or ice if the smoothie is too thin
Taste and adjust sweetness or flavor
Pour into a glass and serve immediately