Essential oils are obtained by steam distillation of spices and other herbs. Regulating the condition of the steam distillation, at the time of manufacture of the oil, tailor-made aroma extractives can be produced. Similarly, vacuum fractional distillation can produce concentrates. Essential oils represent the aroma of spices. Essential oils are volatile and liquid aroma compounds from natural sources, usually plants. Essential oils are not oils in a strict sense, but often share with oils a poor solubility in water. Essential oils often have an odor and are therefore used in food flavoring and perfumery.

Ajwoin seed oil Curcuma zadoeria oil Manteria oil
Amaranth Oil Cypriol oil Marjoram oil
Ambrettee seed oil Davana oil Nutmeg oil
Angelica root oil Dill seed oil Olibanum oil (frankincense oil)
Anise seed oil Eucalyptus oil Palmarosa oil
Asafetida oil Evening prime rose oil Parsley seed oil
Basil oil(Holy) Fennel seed oil Patchouli oil
Bergamot oil Galangal alpinia oil Pilu Oil
Betel leaf oil Galangal kaemferia oil Piper cubeba oil
Black cumin seed oil Galangal officinarum oil Ravensara oil
Black pepper oil Garlic oil Red thyme oil
Cajuput oil Geranium oil Rose absolute oil
Calamous oil Ginger oil Rose concrete oil
Caraway oil Ginger grass oil Rosewood oil
Cardamom oil Hedychium oil Tagetes oil
Carrot seed oil Honey Suckle oil Tea tree oil
Cassia oil Inula Oil Thuja oil
Cade oil Jamrose oil Thymol natural ex-ajwain oil
Cedarwood oil Jasmine absolute oil/concrete Turmeric oil
Celery seed oil Jatamansi oil(spikenard) Valerian oil
Chamomile blue oil Juniper berry oil Vetiver oil
Cinnamon leaf oil Kaffir lime oil Winter green oil
Citronella oil Laurel berry oil Worm wood oil
Clary sage oil Lavender oil Xanthoxylum oil
Clove bud oil Lemon oil Yarayara oil
Coriander oil Lemongrass oil Ylangylang oil
Costus root oil Lime oil  
Cumin seed oil Mace oil