Ingredients :

• Prunes — The central ingredient. Five prunes, soaked in cold water since the night before. After a night of hydration, they are plump, soft, and their skin peels easily. Choose Agen prunes if you can — they are sweeter and less acidic than generic varieties. Remove the pit before blending, goes without saying.
• Chia seeds — One teaspoon is enough. They don’t have much flavor of their own, but they absorb liquid and give that slightly gelatinous texture that makes the smoothie more than just colored water. If your blender isn’t very powerful, let them soak for five minutes in the milk before blending everything.
• Banana — Get a very ripe one — not green, not perfect yellow, but with little black spots on the skin. This is when it’s sweetest and creamiest in the blender. You can also use a frozen sliced banana: the smoothie’s texture will be thicker, almost like soft serve.
• Oats — Two tablespoons of classic rolled oats, not oat flour. The flakes blend well and provide thickness without being heavy. Quick oats blend even better than large rolled oats if you have the choice.