Feb 2, 2024 · Place 1/2 to 1 full chimney (50 to 100) of unlit coals onto your charcoal grate. Fully light 1/4 chimney (25) of coals, and when glowing red-hot place onto the unlit coals on the charcoal grate. Close the lid, and allow the grill to come up to temp. Use a digital BBQ thermometer to measure the internal temp of the grill.