Here is my usual method:
1) Being a greedy pig, there is
never any leftover food in the bottom of my pans, so first I fill the pan with water to cover the mucky parts and set it over the fire to warm the water.
2) Once the water is warm enough to start lifting the grease, have a good rinse around / stir with a spoon, then tip most of the (now dirty) water out
3) Pull up a small clump of grass, knock most of the soil off the roots, then use the gritty roots to scour the pan clean. Wipe the pan out with the grassy top part. Rinse the pan with a little water then repeat (maybe with a new clump of grass
) if necessary.
4) Give the pan a final rinse and then set it close to the fire to dry out and sterilize
This method works well for me: I always use stainless utensils and pots (so I can sterilize them in this way) and I never carry washing up liquid.
HTH
Rat