Ryazhanka, a classic Ukrainian drink, is cool, tangy and lightly sweet, like yogurt with a touch of dulce de leche. This recipe comes from Olga Koutseridi, who spent her childhood summers in Mariupol, Ukraine, where vendors sold chilled ryazhanka that she’d guzzle after a day at the beach. The slight caramel flavor comes from slowly baking whole milk, which can be done in the oven or a slow cooker, before mixing it with a fermented starter like sour cream or kefir.
