Ensalada de Nopales

Toss together the tomato, onion, nopales, serrano, and cilantro.

Make a dressing with the olive oil, lime juice, oregano, and salt. Pour over the vegetables and toss again to thoroughly mix.

Cover and refrigerate for at least 1 hour to let flavors meld. Serve within 24 hours, as the cactus will become slimy if left too long.