There is a Fellow Woodsman here in L.A. by the name of Chris Nyerges,He specializes in Wild Foods thru-out the west,& Was a Friend of Eull Gibbons,Remember him?Grape Nuts commercial-"Ever ate a Pinetree?,Many parts are edible!"Google-Christopher Nyerges,I'll bet he could answer your question for pinion nuts,He has a school/classes for wild edibles! Good Luck!