People have debated the merits of using a lid on their grills as long as grills have been around. While it is true that the earliest BBQ grills were used primarily to grill steaks and burgers, grilling connoisseurs over the years have experimented with more and more food types. Today, people are just as likely to grill fruits and vegetables as they are to grill meats. They are also just as likely now to cook a thick roast on the grill as a few hot dogs. There’s no doubt about it, backyard grilling today is a sophisticated art form.
Grilling with the lid open or shut has spawned at least as many arguments as which came first, the chicken or the egg? Experimentation with degree of doneness and flavor, along with basic science, has dictated the reasons why a lid should be closed while grilling.