Of course, it is best to start cleaning immediately after use. Then the remnants of fat will not have time to completely dry, and it will be easier to clean with a wire brush. But who will do this at the very height of the party? In principle, this case can be postponed until next in the morning. The main thing is to hold the grill in a humid state until the moment of cleaning. So, put the grill grille in water with the addition of dishwashing liquid or wrap it in a wet newspaper.
If you used coal, then you will have ash. Previously, such ash was used to make soap. It is also great as feeding for your plants.
To clean the grill, you will need 2 cups of cold ash. The ash must be sifted so that there are no large lodges of coal. The sifted ash is what you need to clean the grill.
Take a wet towel or a wet sponge, lower it into the ash and clean it with a grate.
Do not save on ash. It should turn out a thick gruel. It is best to clean the grill in the garden: you can easily rinse it with a hose, and your plants will get a little fertilizer.