Our crab has learned to make soap and wants sharing it.
If don't throws used oil in the sink then you helps to nature a bit.
Just needs a good strainer to spend the oil after cooking.
Then mix in a bucket with liquid caustic soda helped for an adult.
You must use gloves and mufflers because soda is strong.
Now you can stir with a wooden paddle until to have right texture.
The mix should be like a good mayonnaise.
You can pour into the mold and let stand until the next day.
Making soap from FLYKIT on Vimeo.
It is very efficient as a detergent. You could also add scent drops.
If you will not recycle the used oil take it to a suitable location.
Oliobox from Kristof Luyckx on Vimeo.
Now you know how to do.