Is flour turned yellow still good?

yes it has, all flour will. to make it last longer put it in a tight close container and place with expiration date in refrigerator. it'll help it last longer

It's been contaminated by age & exposure to various other elements.

If it's originally white turned to yellow; means it's been for a very very long time. Do poke around it, if it has a kinda sour/husky smell then better not use it. Throw the whole pack away.

my flour isnt yellow it is in a contaner is it still good

"Unbleached" flour is yellow when you buy it. If it still flows freely and has no weevils in it it should be fine.

Bert

Geez, how old is it? Just buy new, flour is cheap. I'm sure your flour is not good.

if the yellow to much..that's bad...no good..dump it..it's bad for your health..because that's mean contamenated...!!!

but if that's have light yellow or become broken white..that's still can use..

l wouldn't use it, l've keep flour for a year and it is still white, but it is in a canister.