Ginger is one of the most popular spices in the world and comes from the underground stem of the ginger plant. The aromatic and fiery spice has been a signature ingredient in Asian cuisine since ancient times. Today, it is frequently used in medicines, food, and cosmetics across the globe. The flavor of fresh ginger is slightly peppery and sweet, with a pungent and spicy aroma. Much like garlic, fresh ginger mellows with cooking and turns bitter if burned.