Brown ground beef in a large skillet, drain, add taco seasoning and 1/2 cup water, simmer 5 minutes.
Meanwhile, cook rice in a pot with 5 cups water and lime zest for 18 minutes until tender.
Warm taco shells in the oven at 350°F for 3 minutes.
Fluff rice with cilantro and lime juice, serve beef in shells with rice on the side.
Photo: Jeswin Thomas / Unsplash