@Livo, I can't remember the exact allergy that the people suffered from, there was news about a restaurant owner being sued for using one of them... but so many people now have allergies to so many different things (that people never seemed to be allergic to before), be it nut, fruit or root...
I think I said my wife works in a school? And without having to provide any medical certification, the parents can claim any and some of the exemptions are laugable:
'My Child is allergic to Dairy... but can eat Pizza, just not fruit pie'...
'My child is lactose intolerant but can have Ice Cream'...
'My child cannot eat any form of eggs as they do not like it...'
People have severe allergies and I know they have to be extremely careful.. so I am always very careful about what I serve..
'Roger Cook' - TV Investigative Journalist had a severe allergic reaction to... Tomato or Cucumber, I forget which.. but who would guess that?
My point about this is, know your Consumer and their likes/dislikes/allergies and you can't go far wrong?
Maybe the 5% was some form of nut powder (Almond or Peanut) which is today not allowed due to Allergies.. I don't know.