Make the lime crema: In a small bowl combine 1/2 cup plain Greek yogurt, the juice and 1/2 teaspoon zest of the lime (reserve the other half of the zest for garnish if desired), 1/8 teaspoon garlic powder (optional), a pinch of salt and 1/8 teaspoon freshly ground black pepper. Whisk until smooth. Why: The lime brightens the thick Greek yogurt and thins it just enough to drizzle; the garlic powder gives background savory depth without adding raw garlic bite.

Prepare the shrimp marinade: Pat the shrimp dry with paper towels (dry surface = better sear). In a bowl, toss shrimp with 1 tablespoon olive oil, minced garlic, 1 teaspoon chili powder, 1/2 teaspoon kosher salt and 1/4 teaspoon black pepper. Let sit 8–10 minutes while you prepare the slaw and tortillas. Why: Drying the shrimp helps them caramelize instead of steam; a short rest lets the flavors adhere without 'cooking' the shrimp in acid.

Make the cabbage slaw: In a medium bowl combine 2 cups shredded cabbage, chopped cilantro, a squeeze of the remaining lime (about 1 tablespoon), 1/2 tablespoon olive oil, a pinch of salt and a grind of black pepper. Toss to coat. Why: A light acid-and-oil dressing softens the cabbage slightly while preserving crunch — the contrast to juicy shrimp is essential for texture.

Preheat your grill or skillet: Heat a cast-iron skillet or a grill pan over medium-high heat until very hot (a few minutes). Why: High heat is required to get quick color on the shrimp which locks in moisture and creates flavor through Maillard browning.

Cook the shrimp: Add a drizzle (about 1 teaspoon) of oil to the hot surface, then spread shrimp in a single layer — work in two batches if your pan is crowded. Cook without moving for 1–1 1/2 minutes until the underside is golden; flip and cook another 30–60 seconds until opaque and just firm. Remove from the heat and immediately squeeze a little lime juice over the shrimp. Why: Shrimp cook very quickly — overcooking makes them rubbery. A hot surface gives a fast sear that keeps them juicy.

Warm the tortillas: Heat tortillas directly over a gas flame for a few seconds per side or warm in a dry skillet for 20–30 seconds per side until pliable with light brown spots. Keep them wrapped in a clean kitchen towel to stay warm and pliable. Why: Briefly charring/ heating releases corn aroma and prevents them from tearing when folding the taco.

Assemble the tacos: For each tortilla, place about 3 oz (roughly 4–5) shrimp, a generous handful of cabbage slaw, 2–3 slices of avocado, a drizzle (about 1 tablespoon) of lime crema, and a sprinkle of chopped cilantro and reserved lime zest. Why: Layering hot shrimp with cool slaw and creamy avocado offers temperature and texture contrast — the crema ties the flavors together.

Final seasoning and serve: Finish with an extra squeeze of lime and a light dusting of chili powder or smoked paprika if you like more smoke. Serve immediately so tortillas remain warm and slaw retains some crunch. Why: Finishing acid brightens flavor and a last dusting of spice enhances aroma.