How to Make It
Heat a large wok. Add the salt, the fennel, coriander and cumin seeds and the crushed red pepper and cook over high heat, stirring constantly, until the spices are lightly toasted, about 30 seconds. Add the shrimp and toss immediately with the spices. Cook, tossing constantly, until the shrimp are opaque and their shells are beginning to char, about 5 minutes. Transfer the shrimp and any toasted spices to a large bowl and serve.