1. Preheat oven to 180° C (upper and lower heat). Wrap sweet potatoes into aluminum foil and bake in for 60-80 minutes. Take out the oven and take out the pulp with a spoon.
2. In the meantime, peel the pineapple and dice it. Wash oranges with hot water, then dry them: Grate the zest and squeeze all citrus fruits. Blend with sweet potatoes, pineapple and coconut water, season with lemon juice.
Tip: Cook sweet potatoes the evening before.