If you kow the South’s red clay soil, you can forget it. Same goes for the bottle of Red Clay Hot Sauce. The Red Clay Hot Sauce was exertly crafted by stubborn Southern chef obsessed with quality, flavor and tradition. Flavor profile (Verde Hot Sauce): Medium. Zesty, spicy serrano pepper has a bit of bite, but paired with cilantro, fennel adn onion, this herbaceous recipe is the star of any fiesta.