How is salep made from the tuberous roots of some Orchis species?

Salep is a nutritive product derived from the tuberous roots of various Orchis species, a genus of terrestrial orchids native to Eurasia and northern Africa.12

To produce salep, the tubers are harvested, boiled, and then dried. Once dried, they are ground into a powder or flour substitute. This resulting powder is often mixed with sugar, flavorings, and a liquid such as water or milk to create a traditional drink, or it may be used as a food supplement.12