Restore Your Grill With a New Grate
Make your grill seem like new, simply by replacing the most crucial part. When the wire brush and cleanser can no longer erase the grunge on the grate, treat yourself to a squeaky-clean replacement (from $11, amazon.com) and eliminate the battle with petrified gristle―at least for a few more seasons.
For those professional grill marks, use a cast-iron grate. Cast iron gets much hotter than standard-issue aluminum. After the first two or three minutes over the fire, lift the food with a spatula, turn it 45 degrees (don't flip it), and place it back down to finish cooking. Never flip and flop randomly. And turn food only once.
Keep your grill clean all year long: