sardines in tomato sauce • Enough corn tortillas • white onion • jalapeño pepper, or 3 serrano peppers if you like it spicier • medium red tomatoes • celery stalks • cilantro (about 10 grams) • black or green olives, your choice (about 70 grams) • shredded Monterey Jack cheese (about 110 grams) • Salt, to taste • Black pepper, to taste • Garlic powder, •