Divine Shrimp Salad

Name: Divine Shrimp Salad
Ingredients: 2 fresh or dried bay leaves; 4 strips lemon peel; 7 parsley stems; 1 teaspoon black peppercorns; 1 1/2 teaspoons kosher salt, divided; 1 1/2 pounds U-20 shrimp; 1 cup packed dill fronds, chopped; 1/2 small red onion, thinly sliced; 3 tablespoons extra-virgin olive oil; 1 1/2 teaspoons fish sauce; Finely grated zest from 1 large lemon; 1 tablespoon plus 1 tsp freshly squeezed lemon juice (from about 1/2 large lemon); 1 pinch ground cayenne; 4 slices of sourdough bread, toasted; 1 large avocado, pitted and sliced