Cuban Black Beans

Ingredients

• 400 g dried black beans, soaked overnight in cold water
• For the sofrito
• 1 green pepper, finely diced
• 1 white onion, finely diced
• 4 garlic cloves, finely chopped
• 2 tsp cumin seeds, toasted and ground
• 1 tsp dried oregano
• 60 ml olive oil
• For the refrito
• 1 green pepper, finely diced, raw
• 2 garlic cloves, finely chopped, raw
• 30 ml olive oil
• 60 ml dry sherry, not sweet
• 15 ml red wine vinegar, added at the very end
• 1 tsp fine salt, to season

Method

1. 1
   Drain the soaked beans and cover with fresh cold water by at least 5 cm. Bring to a hard boil for 10 minutes, then reduce to a steady simmer. Cook until the beans are completely tender and the liquid has thickened to a syrup-like consistency — the starchy cooking liquid is the sauce of this dish. Drain nothing.
2. 2
   Toast the cumin seeds in a dry pan over moderate heat, moving them constantly, until they darken one shade and release a warm, rounded fragrance with no trace of harshness. Remove immediately and grind. Raw cumin left untoasted will dominate the finished dish with a sharp, one-dimensional edge that no further cooking corrects.
3. 3
   Warm the olive oil in a wide, heavy pan over moderate heat. Add the diced green pepper, onion, and garlic for the sofrito. Cook, stirring regularly, until every piece is completely soft, collapsed, and fragrant — no raw or crunchy texture should remain. Stir in the ground cumin and dried oregano and cook for a further minute until the spices are absorbed into the oil.
4. 4
   Add the cooked beans and all of their cooking liquid to the sofrito. Stir to integrate. Simmer steadily, uncovered, until the sauce tightens to the characteristic thick, syrup-like consistency of frijoles negros — fluid but not watery, coating the back of a spoon. Some beans must remain visibly whole; the pot must not reduce to a paste.
5. 5
   This is where the dish lives or dies. In the final 15 minutes of simmering, pour in the dry sherry. The slight oxidised, nutty depth the sherry imparts as it cooks into the beans is what distinguishes Cuban frijoles negros from all closely related preparations. Taste: the edge of the sherry should have softened entirely into the background.
6. 6
   Prepare the refrito: combine the raw diced green pepper and raw chopped garlic with the olive oil — do not cook them. Remove the bean pot from the heat. Stir the refrito through the beans. The immediate scent should rise sharply bright and green against the dark, slow-cooked base. This fresh layer is not optional: it provides the two-layer flavour profile that defines the dish.
7. 7
   Stir in the red wine vinegar. The acid should not be detectable as vinegar; its effect is a sensation of freshness and brightness across the dark, complex surface of the beans. Adjust salt and serve immediately.