Over the years, Costco has become a can't-miss destination ... you may not want to use it to bake bread. Flour that's gone bad might take on a noticeable, rancid odor, which likely means the ...

flour, sugar, and milk. Every day, Costco bakes fresh croissants, so when you bring them home, they're typically the freshest they can be. Like with bread, Costco croissants don't need ...