A grill mat is not required to make this recipe, but if you use one, you will find that the process is a whole lot easier. If you've never used a barbecue grill mat, you need to give it a try! Grill mats make grilling fragile things (like fish) a snap, and smaller items won't fall through the grate. The first time we used one, I was honestly amazed at how well it worked, without losing any of that great grill appeal we all love.