I have a gas grill which I use once a week or so.
Today I put some peppers and onions as usual, but I also put chicken wings (first time).
After a few minutes of cooking, the fire went super high, it seems it was getting enhanced by something (either the oil from the veggies marinate or the wings).
Note that I turned off all burners but fire was still there and flames stayed for longer (around 2 more mins).
Is this something normal? It cooked super fast as the flames were reaching the food.