Ingredients :

• Dried prunes — They must soak for at least one night in cold water. Without this, they stay rubbery and the blender struggles. After soaking, they plump up, become meltingly soft, and they’re what give this smoothie its rosy caramel color and natural sweetness. Use d’Agen prunes if you can—they are meatier and less chemically sweet.
• Rolled oats — Only two tablespoons, but they completely change the texture. Go for fine flakes if you want an ultra-smooth result, or whole rolled oats if you like feeling a tiny grain on the tongue. Instant oats also work, but they thicken faster—serve immediately in that case.
• Chia seeds — They never completely disappear in the blender, and that’s perfectly fine. Those little black dots in the glass don’t change the taste, but they swell slightly on contact with liquid and add body. One teaspoon, no more—the balance is just right like that.
• Ripe banana — Half is enough. But it must be truly ripe—yellow skin with brown spots, not green on the edges. That’s when the natural sugar is developed, and that’s what binds everything else together. A firm banana will give a blander and less creamy result.