What's Up With Infrared Grills? It sounds pretty high-tech, but the concept is relatively simple. Infrared grills have a mostly solid, corrugated grate between the flames and the food. The grate protects food from flare-ups—ideal for fatty meats. It also distributes heat more evenly, allowing for consistent cooking across the grill. More control also means less gas consumption, up to 30 percent less. The one downside is that you can no longer blame your burned burgers on a hot spot.