Asafoetida is an Ayurvedic herb used in India as a digestive aid. High in bio-flavonoids (Vitamin C) asafoetida is used as a to stimulate the immune system during cold and flu season. This pungent spice has a garlic and onion aroma and is used in soups, sauces and rice dishes. Also known as hing, asafoetida is one of the most common spices in the world, but is often unknown in the United States. If you?ve been to an Indian restaurant, you?ve probably eaten it without ever knowing.