Shrimp Tacos

I picked up some homemade tortillas at the new farmers market up the street and decided to make grilled shrimp tacos.
The seasoned grilled shrimp are served up with cilantro, creme fraiche and a roasted tomatillo and avocado sauce.

Roasted tomatillo and avocado sauce:
4 Tomatillos
1 poblano pepper
handful of cilantro
1/2 an avocado
2 Tbsp. Lime juice

Dry roast the tomatillos and poblano pepper in a cast iron skillet until charred and softened.  Let cool and add to blender with cilantro and lime juice, puree until smooth.  Cut the avocado into small chunks and add to the blender, continue blending until creamy and smooth.  Adjust seasoning with salt and pepper to taste.  Chill for about an hour before serving over the tacos.