Fish with Tamarind Sauce

Name: Fish with Tamarind Sauce
Ingredients: 1/2 cup tamarind paste; 2 cups hot water; 2 tablespoons extra-virgin olive oil; 1 medium onion, finely chopped; 6 cloves garlic, minced; 1 large tomato, diced; 3 teaspoons sugar; 1 teaspoon ground coriander; 1/2 teaspoon ground cinnamon; 1/2 teaspoon ground cumin; Kosher salt and freshly ground pepper; 3 tablespoons unsalted butter; 4 flaky white fish fillets (6 ounces or 170 grams each), such as red snapper; Gulf-Style Parsley Salad (recipe follows); 1 small red onion, very thinly sliced; 1/2 cup fine-grain bulgur; 2 large tomatoes, diced; Zest of 1 lemon, plus juice of 1/2 lemon; 1 bunch radishes, greens attached (about 8); 4 cups finely chopped fresh flat-leaf parsley (from 2 bunches); 1 cup finely chopped fresh mint; 1/8 teaspoon ground cinnamon; 1/8 teaspoon ground coriander; 1/8 teaspoon ground cumin; 1/8 teaspoon ground turmeric; 1/4 cup extra-virgin olive oil; Kosher salt