Fresh coconut milk blended with lime juice, ice, sugar and a little cream, until it comes out pale, thick and frothy. It is the drink of Cartagena and the Caribbean coast, sold everywhere in the old city. Made from a whole coconut, or from a tin in five minutes. Serves four.
If you do not want to break open a coconut, use 1½ cups of tinned full-fat coconut milk and start at step 5. It is what most people do outside the Caribbean and the result is very close. Do not use the carton coconut drink, which is mostly water. Blend it long enough to go frothy: the foam on top is part of what makes a limonada de coco, and it settles within a few minutes, so serve it straight away. The cream is not optional in spirit: it is what turns a sharp coconut drink into the pale, rounded one sold in Cartagena.