Heat oil on a high heat in skillet then add onions and garlic and cook until flavors release.
Add turkey, chipotle in adobo sauce, tomato paste and cumin.
Carefully pour chicken broth on top and mix thoroughly.
Continue to mix and cook until liquid begins to bubble then lower heat to medium.
Taste sauce, and add salt to taste, no more than a 1/4 tsp at a time.
Cover skillet and lower heat once more to simmer and allow flavors to penetrate turkey for approx. 15 mins.
Taste sauce to make sure the flavors are to your liking, and correct if needed then remove from heat.
Heat tortillas in a pan or the oven, then divide turkey mixture among the tortillas.
Top with cilantro and avocado and serve immediately with limes on the side.