DS (3) is diagnosed allergic to cashews, peanuts, pistachois, sesame and lentils. I think raw egg too, though undiagnosed as yet. He's never had a severe reaction but does flare up around his mouth if he eats these things, followed by an awful eczema flare-up.
He always reacted instantly to pesto and I stupidly had no idea that most pesto sauces are bulked out with cashews. But I've just found a pesto with pine nuts only - yay!
Question is, how likely is it that he will react to pine nuts? WWYD? Scared to try!