You all should watch out for the almond. They are a source of cyanide
excerpt from
http://www.inchem.org/documents/pims/chemical/pimg003.htm
3. PHYSICO-CHEMICAL PROPERTIES
3.1 Origin of the substance
Cyanide can be of natural or synthetic origin.
Natural origin: cyanide is found in foodstuffs such as
cassava, cabbage, spinach, mustard and in the kernels of
apples, stones of peaches and plums, as well as in cherry
stones and in almonds. Another source of human exposure is
tobacco smoke.