New Mexico has an official state question: Red or Green? And nowhere does the answer matter more than when it is melted over a freshly grilled burger patty.

The Green Chile Cheeseburger Trail is a New Mexico Tourism Department designation recognizing the state's most iconic burger destinations. Frontier Restaurant, a 24-hour diner across from UNM that has been feeding Albuquerque since 1971, is the quintessential starting point: giant portions, freshly roasted green chile, and a dining room that is pure New Mexico.

Beyond Frontier, the trail winds through Duran's Central Pharmacy and Bob's Burgers on Wyoming — each a chapter in the same delicious story.

Come hungry. Order Christmas (both red and green). No regrets.