Heat the oil in a large non-stick or cast iron skillet over medium high heat.
When the oil is hot (it will be shimmering), carefully add the chicken or turkey meat (*see note) to the pan and spread it out into an even layer. Let it sit undisturbed for 1-2 minutes so it can develop a crust on the bottom.
Season with salt and give it a stir. Continue cooking, giving a stir every few minutes until the meat is golden brown and crisp - about 8-10 minutes. Taste for seasoning and add more salt if needed
Use a slotted spoon to remove the meat from the pan, allowing any excess oil to drain off.
Warm the tortillas by briefly grilling them, toasting them over a gas flame or popping them in the oven or microwave for a minute.
Fill the tortillas with the chicken or turkey carnitas, then top with onions and cilantro. Serve with lime wedges, avocado, hot sauce, salsa or anything else you enjoy.