Brown your ground beef with the onion and mushrooms in a large skillet over medium heat.
When brown, add cauli rice and garlic. Cook until everything is hot.
Mix soy sauce, sesame seed oil, sweetener, powdered ginger together in a small bowl. Add to meat and veg mixture. When the sauce is mixed in well, taste and add salt and pepper. Soy sauce is salty so I like to wait to add the salt.
Serve in lettuce cups. Top with green onions and cilantro.