black cumin or nigella sativa seed oil on a metal spoon

black cumin seed oil nigella sativa kalonji supplement nutritional antioxidant antiinflammatory thymoquinone spoon immune digestive blood sugar skin care antimicrobial food health healthy alternative medicine organic diet vegetarian vegan nature natural herbal herb raw ingredient spice culinary caraway condiment essential asian indian antiseptic plant seasoning ayurveda kalindzhi metal top view