Hollingshead claims to have first tried LSD by licking the spoon of a batch of LSD-laced cake icing he had packed in a mayonnaise jar for transport. (This jar was to become the object of psychedelic legend.)
According to Hollingshead, his initial experience with LSD involved tasting the spoon of a batch of cake icing that had been laced with the substance, which he had stored in a mayonnaise jar before transporting it.