1-4 hrs but no more. Make sure potatoes are covered with water.
It isn't recommended to cut the potatoes a few days before cooking. As soon as they are cut, the air will hit it and turn the insides brown (like an apple). You can cut them the night before and soak the potatoes in water until ready to cook.
To remove unwanted microorganisms, dust particles and grease etc.....
Wash them with hot water and soap. Soak for a while if necessary. Rinse in a bleach water solution.
Rust is merely the oxidized byproduct of iron and can be removed with an acid. The best way is to soak the ball bearing in a solution of salt and vinegar.
This cloth will soak up all of the water
You can soak the peeled and cut potatoes for up to 24 hours prior to boiling.
Put the plant in a dark place for 24 hours.Then take it out and soak it in boiling water, then take it out.After that, boil it in alcohol. Then put the leaf into iodine solution, if the iodine solution turns from amber to blue black, that means starch is present. ^_^
If you want to remove it from fabric, you can you a combination of corn starch and dish soap. It will need to soak for 30 minutes.
Simply soak fabric in liquid starch and apply to the wall. To remove it will peel off easily and wall can be washed down...great for apartment dwellers.
There is no reason to. They don't oxidize like potatoes.
Soak it in water to keep it from browning
soak the clothes in water with starch(mixed and boiled) or spray lightly the surface of the clothes before ironing.
Yes you can.
soak it in oliveoil and rub
You soak clothes with blood stains on them in cold water.
Old potatoes can be rehydrated by mainataining in water 24 hours. Salt water increase the content of sodium in potatoes but it is not important.
Other than wearing it for a week the only way to remove is to soak the stained area in full strength bleach for however long it takes