Glad to hear it.  It's always nice when people put family first.

Hope you have a great Thanksgiving.

Thank you for the replies.  Our son is allergic to pistachios but no clue about mangos.  Good news is that they are no longer using the brine so we don't even have to deal with it!!!    :-)

DD is allergic to cashews-- I'd skip the turkey and not worry about the rest.  That's me.

Does your child have a history of cross-reactivity within the same family/related allergens?  That is, is he also allergic to mango and pistachio?  DD is, so that plays into our decision-making there.

I am not allergic to walnuts. I am allergic to peanuts.  I eat other foods in the same family as peanuts. 

I cannot tell you what you should do, but for myself, I would not be concerned about cross contamination from a different food in the same family; especially since he had eaten it before with no problem.

We are supposed to go to a relatives house for Thanskgiving and have found out the brine they use for the turkey has pink peppercorns in it.  Our son is allergic to cashews (as well as peanuts and some other nuts) and with pink peppercorns recently in the news as being related to cashews, we don't want our son to eat the turkey.  They used the same brine last year and he didn't have any reaction, so not sure if we were just lucky?  So thinking we would just cook our own turkey breast and bring so he can eat that, but do you think the risk of cross contamination in their kitchen with the peppercorns is too high for all the other stuff they will be preparing?  Or since it isn't an actual nut but just from the same family, is it less of a risk?