Heat 2 smashed garlic cloves, 1 diced jalapeno and 1 teaspoon cumin seeds in a skillet with olive oil over low heat, 5 minutes. Toss a 15-ounce can of black beans, 1 1/2 cups each diced cucumber and halved grape tomatoes, 4 chopped scallions, a squeeze of lime juice and some chopped cilantro in a bowl. Mash the hot garlic mixture and add to the beans. Season with salt and toss with watercress.
Photograph by Antonis Achilleos