Here’s a question I’ve been wondering at.
On the boxes of certain types of food (e.g. muesli) after the list of ingredients, sometimes there’s an additional line that says “may contain traces of nuts” or something similar, while there aren’t supposed to be any nuts in it. Also, some products which contain almonds have a line that says “May contain traces of peanuts”. I’m not an expert on either chemistry or cooking, but it seems to me that if there are no nuts in there, there shouldn’t be trades of them either. Or am I just wrong?