EatingWell’s 13 Essential Grilling Tips will help you choose whether you should use gas or charcoal and why you shouldn’t skip marinating your meat. The age-old debate over which grilling method is “better” involves multiple variables, from flavor to cost to convenience. While no studies prove that either is healthier, gas does burn cleaner. Charcoal grills emit more carbon monoxide, particulate matter and soot into the atmosphere, contributing to increased pollution and higher concentrations of ground-level ozone. From a taste perspective, on the other hand, many people prefer the smokier, richer taste of food cooked on a charcoal grill.