Fried Shrimp Flatbreads with Spicy Cardamom Sauce

Name: Fried Shrimp Flatbreads with Spicy Cardamom Sauce
Ingredients: 1/2 c. Crème fraîche; 2 tbsp. buttermilk; 2 tbsp. Chopped mint; 2 tbsp. minced chives; 1 lemon; 7 clove garlic; salt; Freshly ground black pepper; 4 Thai chiles; 1 tsp. ground cardamom; 1/2 tsp. ground cumin; 2 tbsp. freshly squeezed lemon juice; 1 large egg; 1 c. panko (Japanese bread crumbs); 16 large shrimp; vegetable oil; 4 thin flatbreads; 1 Hass avocado; 1/4 c. sliced pickled red onions (from a jar of pickled beets and onions)