In a skillet at medium heat, add the longaniza. As it begins to sizzle and become aromatic, use a wooden spoon to break it into smaller crumbles. Stir as needed. Cook for 10-12 minutes.
In another skillet at medium heat, add 2 tablespoons of oil. Add the onions and jalapeños. Season with salt and pepper, to taste. As they come up to temperature, saute for 4-5 minutes. Add the oregano and bay leaves. Saute for one minute. Mix in the vinegar and let everything cook for 3-4 minutes.
At the same time, you should have been warming your tortillas, if possible.
Add some longaniza to warm tortillas. Garnish with quick pickled onions and jalapeños. Garnish with salsa and fresh chopped cilantro!
Notes
If you don't have fresh hot peppers, pickled jalapeños will work in a pinch. Use some of the vinegar from the can or jar they came in.