In a large pot, heat the olive oil over medium heat. Add the onion and garlic and cook, stirring occasionally, until the onion is softened and lightly browned.
Add the ginger and cook for an additional minute.
Add the vegetable broth, soy sauce, and cayenne pepper and bring to a boil. Reduce the heat and simmer for 10 minutes.
In a small bowl, whisk together the cornstarch and water until smooth. Stir the cornstarch mixture into the soup and cook for an additional 2 minutes, stirring constantly.
Season to taste with salt and pepper.
Serve hot.
Interesting Facts
Ginger has been used for centuries in Chinese and Indian medicine to treat many ailments.
Ginger is rich in antioxidants, which can help reduce inflammation and boost the immune system.
Ginger has been shown to aid in digestion and can help relieve nausea.