top-quality boneless beef tenderloin, sirloin, or top round, trimmed of all fat and connective tissue and finely ground • minced green onion, including green tops • fresh red or green mild to hot chili peppers, stemmed, seeded, and minced • small fresh prickly pear cactus pad scraped to remove thorns, sliced into small pieces, and boiled until tender, then rinsed to remove slippery juices OR 1/4 cup drained canned sliced nopalitos • finely chopped red sweet pepper • finely chopped carrot • minced daikon or other radish • minced fresh cilantro • minced or pressed garlic • Soy sauce, preferably tamari • Asian-style sesame oil • Hot chili oil •