As long as the distribution is uniform, not covering the color of the skin of the grapes themselves white frost can be considered to be the secretion of the sugar alcohols of the grapes themselves, also known as the fruit powder, completely harmless to the human body, the grapes of the "God of protection".
Because sugar alcohols are insoluble in water, it can avoid the surface of the grapes adsorption of water to form a moist environment, which leads to the breeding of germs and infestation, but also to prevent the grapes from picking the speed of water loss is too fast and wrinkled.
Additionally, the wine yeast contained in the white frost prevents microbial contamination during the wine making process. So, when picking grapes, don't intentionally avoid grapes with white frost. In addition, the white frost of grapes is very fragile and can be easily rubbed off during transportation or storage, so the more white frost there is, the fresher the grapes are.
Not only do grapes secrete fruit powder, but plums, blueberries, prunes, and many other fruits also have this on their surface.
Remove clean grapes on the white frost method:
1, in the cleaning of grapes before the first use of scissors will be with fruit stalks cut open, the fruit stalks do not stay too long and too big, too long and too big may be in the cleaning of the other grapes scratched.
2, will cut open the grape fruit gently into the basin, first with clean water will be attached to the surface of the grape dirt impurities rinse.
3, and then to the container with grapes into a spoonful of salt, two spoons of flour, add the right amount of water, gently stirring with the hand clockwise, put one minute or two minutes.
4, pour out the dirty water, clean water and then wash, until you see no white frost on the skin of the grapes, no impurities, and then the grapes out of the water on the container with holes in the water control clean.
5, if you want to make the grapes without a trace of water stains, you can lay a clean towel on a flat plate, pour the grapes into a flat plate, drag the bottom of the plate gently shaking, the grapes particles evenly rolled, the towel will be able to dry up the water on the skin.
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