Kumis
Kumis in Colombia is a thick, sweetened fermented milk, nothing like the Central Asian mare's-milk drink of the same name. Bakeries and cafeterias sell it chilled in glasses with a slice of plain sponge cake, the classic kumis con ponqué, and many families still make it at home. It is cool, tangy and creamy, somewhere between drinking yogurt and buttermilk. Use only pasteurised milk, heat it first, and work with very clean equipment: wash jars and spoons in hot soapy water and scald them with boiling water. The milk ferments at room temperature (20–28 °C, out of direct sun) for 12–24 hours, then goes into the fridge; never leave it out longer. Discard any batch with mould, pink or orange patches, or a rotten rather than sour smell. Adding the starter to milk that is still too hot is the common slip, as heat kills the cultures and nothing sets. Chef's tip: add the sugar after fermenting, then chill well before serving.




