Pat shrimp dry: Pat the large shrimp completely dry with paper towels. This is the most important step for getting a blackened crust. Transfer to a medium bowl.
1 lb large shrimp
Mix the blackening seasoning: In a small bowl, stir together the blackening seasoning and lime zest. Add the shrimp and toss to coat.
2 teaspoons EACH: smoked paprika, ground cumin, garlic powder, 1 teaspoon EACH: dried oregano, onion powder, kosher salt and black pepper, 1/2 teaspoon cayenne pepper, 1 teaspoon lime zest
Make the slaw: In a medium bowl, toss the green cabbage with fresh lime juice, avocado oil, and a pinch of kosher salt. Toss well and set aside.
3 cups finely shredded cabbage, 1 Tablespoon lime juice, Drizzle of avocado oil or olive oil, 1/2 teaspoon kosher salt
Make the crema: In a small bowl, whisk together the Greek yogurt, sour cream, adobo sauce, fresh lime juice, and kosher salt until smooth and pourable. Taste and adjust lime or salt as needed.
1/2 cup full fat plain Greek yogurt, 1/4 cup sour cream, 1 Tablespoon adobo sauce, 1 Tablespoon lime juice, 1 teaspoon honey, 1/2 teaspoon kosher salt
Cook the shrimp: Heat the avocado oil in a large cast iron skillet or non stick skillet over medium-high heat, until shimmering. Add the shrimp in a single layer, without overcrowding the pan. Cook for 2-3 minutes undisturbed. The shrimp should be deeply browned and the spices should look blackened. Flip them and add the butter to the center of the pan. Continue to cook for 1-2 more minutes, using the pan handle to swirl the butter around. The shrimp are done when they curl into a C shape and the spices are deeply charred. Remove from the heat immediately and squeeze lime juice over top.
2 Tablespoons avocado oil, 1 Tablespoon unsalted butter
Toast the tortillas: Heat the tortillas in a dry skillet over medium heat for 30 seconds per side until lightly charred around the edges. You can also char them directly over a gas stove.
8 corn tortillas
Assemble the tacos: Layer each tortilla with a generous serving of slaw then layer on the shrimp and drizzle with crema. Finish with a squeeze of lime and finely chopped cilantro.
Taco toppings: cilantro, avocado, feta, or pickled red onion