Salsa with lime

1 lb large shrimp , peeled and deveined 2 tablespoons olive oil 1 tablespoon lime juice 1/8 teaspoon ground black pepper 1 large onion , chopped (about 1 cup)[...]

3 canned tomatoes , from a 14 . 5-oz can of redpack whole peeled tomatoes with juice (drained) 4 garlic cloves , roasted 1/2 medium onion , roasted 1 teaspoon[...]