The composition of the headspace of dill herb, a C02extract of dill herb, dillweed oil and dillseed oil(Anethum graveolens)were compared both chemically and organoleptically. Using GC/MS as the method of chemical analysis the oils were found to be rich in limonene and carvone. In contrast the dill herb headspace was found to be rich in monoterpene hydrocarbons, while the C02extract was rich in α-phellandrene and dill ether. Dill ether was found to be the most important compound with respect to the aroma of dill herb, seeds, etc. The absolute configuration of dill ether was determined to be(3R,8S,9R)-3,9-epoxy-p-menth-l-ene.