Chipotle Shrimp Tacos

For the chipotle lime crema:
In a small bowl whisk together the sour cream, lime juice and chipotle chili powder. Season to taste with kosher salt. Refrigerate until ready to use.

For the shrimp:
Combine chili powders and salt in a small bowl. Rub the shrimp with the spice mixture, put them into a bowl and let them marinate for 30 minutes.

Add the vegetable oil into a large non-stick pan and bring it to medium heat. Add the shrimp and cook until just opaque, about 3 minutes. Immediately remove them from the heat.

Heat the tortillas using your preferred method and add the shrimp. Top each taco with shredded cabbage and avocado if desired. Squeeze some fresh lime juice over the top and serve with pico de gallo and the chipotle lime crema.