Soak 1/4 cup thinly sliced red onion in cold water, 10 minutes; drain. Combine 2 tablespoons sour cream, the juice of 1 lime and 1/2 teaspoon hot sauce in a bowl. Thinly slice 2 avocados and arrange on a platter. Top with 4 thinly sliced radishes and the onion. Drizzle with the sour cream dressing and sprinkle with chopped cilantro and crumbled cotija or feta cheese.
Photograph by Justin Walker
Recipe courtesy Food Network Magazine