Sort and wash the blueberries, then purée them with the confectioner’s sugar. Pass through a fine sieve and flavor with crème de cassis and blueberry liqueur.
This fruit of a low bush in the Vaccinium family contains a high amount of tannins and is therefore used as a home remedy against diarrhea and bleeding gums.
St. Hildegard von Bingen treasured this very useful berry and created a powder of dried red European blueberries for use against digestive trouble.
She wrote that this powder “looks like red wine when mixed with water, and is lovely for quenching your thirst.