The apricot kernels are the almonds (biologically the seeds) of the apricot stone (the kernel in the fruit as stone fruit). As with real almonds, there are so-called sweet and bitter apricot kernels. The sweet kernels come from apricot cultivars that are offered for the fresh market. The bitter apricot kernels, with their typical aromatic bitter almond taste, are obtained from the small, sour wild apricots. There are pips that are lighter or darker in the skin of the fruit; As a rule, the sweet kernels are elongated, the bitter kernels more compact in shape. In the confectionery industry, apricot kernels are primarily used as a raw material for the production of persipan, a mass similar to marzipan. (Source Wikipedia)