How can I prevent milk from turning sour ?

Keep it chilled. The thermal flask will maintain cold temperatures as well as hot.

Use it for a base in a dressing.

Milk will turn.

Unless you want cheese.

Skim will keep well after sell by date, it's mostly water.

Whole will turn, and then you better use it in a recipe or something cause it will sour.

It could keep you running to the bathroom if you aren't used to it.

Don't boil it!!!

A microbiology text textile could supply you authoritative solutions. First, the lactose is broken right down to lactic acid that coagulates the protein (acid pH of milk) then while the lactose is all fed on the bacteria breaks down the protein to variety ammonia (base pH of milk). you're able to email a professor of microbiology, what i comprehend is from microbiology class of years in the past.

There should be no need to boil milk, just keep it cold.

freeze it..then when you need to use it,thaw it out.