1. Cast iron grates
They are more difficult to clean because cast iron is porous and tends to retain dirt and grease. To clean them best, fill a large bowl with hot water and washing-up liquid. Submerge the grate and leave it in the water for at least an hour. Use a wire brush or a rough sponge to remove stubborn stains.
For particularly stubborn stains, prepare a solution of hot water and white vinegar. Soak the grate and leave for a few hours. For stubborn stains, pour citric acid over it and wait a few minutes before scrubbing. Rinse the grate thoroughly and dry it thoroughly before placing it back on the stove. After washing, lightly grease the grate with vegetable oil to protect it from rust and make cleaning easier later.