First, soak your beans in water, preferably overnight for it to soften. Then the following morning, you filter the water out and then take it to a place where it will be grinded. It is better if you have a blender at home where you do it yourself. Set your blender in a manner that there will be no particles.
Turn the blended beans in a bowl and add water. Stir it until it is properly mixed. The quantity of water you add is dependent on the quantity of beans so that water would not be too much.
Put your ingredients (pepper, salt, little vegetable oil, crayfish, onion, seasoning cubes and tomato if you want). All these should be in moderate quantity.
When that is done, scoop it into your plastics or disposable plates and put it in the pot.
There should be water in the pot before you put them to avoid the water entering your plate. When that is done, pot your already seasoned fish and boiled eggs in each plate. Note, You can cook with or without these things.
Put your pot on fire and cook till it's done. Some people do this with oven and microwave. But I prefer cooking it at once. I hope you'd try and enjoy.
