Black Bean and Garlic Paste (豆豉醬)

Ingredients

• 1 cup fermented black beans
• 1/3 cup vegetable oil
• 1/4 white onion , minced
• 4 to 6 dried chili peppers , torn to small pieces
• 1/4 cup Shaoxing wine (or dry sherry, or sake)
• 1/4 cup light soy sauce (or soy sauce, or tamari)
• 1/4 cup sugar (or brown sugar)
• 1 head garlic (8 to 10 big cloves, minced)
• 1 thumb ginger , minced