Suero costeño
Market stalls in Montería, Sincelejo and Valledupar sell suero costeño from big tubs, ladled into bags: a sour, salty, spoonable cream that goes onto bollos, arepas, boiled cassava, fried plantain and mote de queso. Traditionally it comes from raw milk left to sour in the heat. This home version keeps the flavour but uses pasteurised cream and milk with live yogurt as a starter, which is far safer. Plan for 12–24 hours of fermenting plus chilling. Hygiene matters: wash the jar and spoon in hot soapy water and scald them with boiling water, never use raw milk, and keep the jar at room temperature (20–25 °C, out of direct sun) for no more than 24 hours before it goes into the fridge. Throw it out if you see mould, pink or orange patches, or it smells putrid rather than pleasantly sour. Leaving it out too long is the big mistake: it goes bitter and separates. Chef's tip: salt only after fermenting, as salt slows the cultures.
























