I tend to have a general rule of thumb with food found in the back of the cupboard, if it tastes weird it probably is.
I had to throw a 12 pack of yoghurt out today because it was past its use by date. I only bought it 10 days ago. I suppose that is what happens when I don't have the little ones at home to eat it. I was so annoyed
because I hate to waste food.
Reach for the moon, at least you'll land among the stars.