... water, it evaporate. The ping - pong balls help to reduce this evaporation. They can reduce the water's surface contact with air, which start the evaporation. But if the evaporation already started, the ...

evaporation

The sharp-eyed internet users already discovered, that many professional chefs who use the sous vide, after he / she put the vacuum bags into the water, he / she shedding lot of ping pong balls to the ...