If you’re the pit boss of a restaurant, you know that grates can get dirty quickly. And if they get dirty, it means your food is going to taste terrible. To clean the grill grate, first remove any food that has been sitting on the grate. Then use a plunger to suction onto the top of the grate and pull until all of the grease and food has been removed. Finally, use a vacuum cleaner to clean the entire grate.