Make sure to scrape off any leftover food residue from your grill grates. A clean grill grate won’t have food residue falling into the fire to cause a flare-up. 2. Put the bacon close to the grill’s fire but not directly over the fire. It’ll still cook from indirect heat, but grease is less likely to fall into the flames. 3. Catch the bacon fat with a double sheet of aluminum foil underneath the bacon but on top of the grill. Make sure the foil edges are turned up to catch all the fat that’ll drip.