Earlier this year for Mardi Gras in March, Velvet Taco, a Dallas-based fast-casual brand owned by Front Burner Restaurants L.P., served a gator taco on a hibiscus corn tortilla at its then-10 locations. The taco filling was fried alligator, house “shred” (a slaw of Napa cabbage, red cabbage, carrots and red onion tossed in a Creole vinaigrette), chipotle crema, corn pico de gallo and micro cilantro.