This homemade Cajun seafood boil seasoning comes together in about five minutes with pantry spices and zero cooking. It's built on two paprikas, smoked and sweet, with a heat-forward mix of cayenne, red pepper flakes, and black and white pepper, plus thyme, oregano, and a little ground coriander for a citrusy note that seafood loves. Whisk everything together, store it in an airtight jar, and you'll have enough to season a seafood boil, stir into garlic butter sauce, or rub onto shrimp all season long. This recipe makes about 1¼ cups (20 tablespoons). Stir a few tablespoons into your boil water, bloom a spoonful in butter for a pour-over sauce, or use about 1 tablespoon per pound of shrimp!