Kalonji Oil: Known as blackseed oil, it is extracted from the seeds. Loaded with thymoquinone, a compound with anti-oxidant properties, this amber-coloured oil is used in cooking, body massages and in various beauty treatments. Where is Kalonji oil used? In the Kitchen. The seeds from N. sativa go by the names black seeds, black cumin, black caraway, and kalonji. You can use them or their oil like cumin or oregano to spice curry dishes, pickles, and bread.