Clean your cast iron gas grill grates by heating them to 450°F to burn off debris, brushing them with a wooden grill scraper or nylon bristle brush, and protecting the metal with a light coat of high-smoke-point oil (like canola or peanut).
Reach for the baking soda, even if your cast iron grates don't easily come out of your grill. Make a paste of 1 ½ cups ARM & HAMMER™ Baking Soda, ¼ cup dish soap, and ¼ cup white vinegar in a small bowl. It should be a frothy liquid consistency that sticks to the grill grates.
Safe for use on Cast Iron, do note that as with other dish soaps, Dawn Powerwash can remove the seasoning on cast iron grill grates.
Detergents aren't made with lye, so can't be soap. Either way you still shouldn't use soap with cast iron, but can use detergents, though there is no reason to do so. You can easily clean well maintained cast iron without it.
To clean your gas stove's cast iron grates, soak them in hot, soapy water to loosen grease. Scrub with a stiff nylon brush or a non-scratch pad, make a baking soda paste for stubborn spots, and rinse. Dry them thoroughly to prevent rust, then lightly oil to re-season them.
Average Lifespan of Different Grate Materials
Cast iron — 5–10+ years with regular seasoning and protection from moisture. Without care, rust can take hold in a single season. Stainless steel — 4–7 years before signs of thinning or warping appear, though they resist rust better than other metals.
Yes, Dawn dish soap is perfectly safe for a well-seasoned cast iron skillet. Modern mild dish soaps are gentle enough to remove food debris and grease without stripping the pan's polymerized non-stick coating (seasoning).
What Not to Cook in a Cast-Iron Skillet
No, it is not bad. Modern, mild dish soaps are completely safe to use. The old "no soap" rule comes from decades ago when soaps contained harsh lye, which stripped the skillet's seasoning. Today's gentle dish soaps simply cut through grease without harming the baked-on, nonstick layer.
Using an onion to clean a grill relies on the onion's natural moisture and acidity to steam and lift grease, stuck-on food, and carbon from hot grates. This method provides several practical, culinary, and cultural benefits:
Use a paper towel, sponge, or soft brush while the pan is still warm to remove food residue. If the food is stubbornly stuck, you can either simmer water in the pan to loosen the bits or use coarse salt as a natural abrasive. Wash the cast iron in hot water. Dry thoroughly with a clean kitchen cloth.
Rubbing a raw potato on a hot grill deposits a layer of starch onto the metal, creating a natural, non-stick barrier. This prevents delicate foods like fish, chicken, or vegetables from sticking to the grates and helps clean away leftover food residue.
Mistake 3: Soaking the Pan in Water
Cast iron rusts when exposed to moisture for long periods. A water soak can undo months of seasoning and require a full restoration. Wash quickly with warm water and a soft brush while the pan is still warm. Dry it immediately on low heat until all moisture evaporates.
How to Clean Uncoated Cast Iron Stove Grates
It is better to clean grill grates while they are hot, but it is better to clean the interior parts (like grease trays and ash catchers) when the grill is cold.
Modern dish soaps are safe for cast iron and won't damage seasoning. The old "no soap" rule comes from when soaps contained lye, which stripped seasoning.
If you are doing a full oven seasoning (applying a very thin layer of oil and baking the pan), 3 to 4 coats are ideal to build a solid, protective foundation. Most factory-preseasoned pans are lightly coated, so adding 2 to 3 extra layers prevents sticking and rusting.
The best way to clean a cast iron skillet is by scrubbing it immediately after cooking while it is still warm, using a stiff brush or a paste of coarse salt and water. Avoid dishwashers and harsh scouring pads, and always dry it thoroughly on the stove and rub it with oil to maintain its non-stick seasoning.
Yes, you can absolutely use Dawn dish soap on cast iron.
A cast iron skillet is ruined primarily by rust from soaking or improper drying, warping from extreme thermal shock (like cold water on a hot pan), or cracking if dropped. While most seasoning issues are reversible, letting rust cause deep pitting, or fracturing the iron, destroys the cookware permanently.
You can cook tomatoes in cast iron, but you have to be careful. Highly acidic ingredients like tomatoes can break down your pan's non-stick seasoning and leach metallic flavors into your food if left simmering too long.
Because Dawn Powerwash contains grease-cutting solvents and alcohol, it is too harsh for delicate, porous, or treated surfaces. As a rule of thumb, do not use it on anything you wouldn't clean with rubbing alcohol.
Yes, you are supposed to wash cast iron! While the old myth says to avoid it at all costs, the "no wash" rule comes from the days when dish soaps contained harsh lye. Modern, gentle dish soaps are completely safe and will not strip your pan's seasoning.
Avoid using these common items and methods with your cast iron to protect the seasoning and prevent rust: