Spotted at the Barbican cafe, London.
I can understand labelling cakes with warnings about nuts for allergy sufferers. But you have to wonder what made this company decide they had to put this warning on top on a packet of butter. I'm going to start checking pints of milk to see whether anyone has decided to put "Warning: This product contains what it says on the label" to hammer the point home to anyone who might be a bit lactose intolerant. Or has the campaign of I'm Quite Sure It's Not Butter been just too successful?