Vegetarian Gravy (that tastes like the real thing)

I made this amazing vegetarian gravy for a turkey fry that my professor had at his house. It's really easy to make, and everyone at the turkey fry loved it! (*Warning!! It looks like baby poop at the end, but it is SOOOO delicious! Don't let the way it looks scare you....)

• 1/2 cup vegetable oil
• 1/3 cup chopped onion
• 5 cloves garlic, minced
• 1/2 cup all-purpose flour
• 4 teaspoons nutritional yeast
• 4 tablespoons light soy sauce
• 2 cups vegetable broth
• 1/2 teaspoon dried sage
• 1/2 teaspoon salt
• 1/4 teaspoon ground black pepper

 Heat oil in a medium saucepan over medium heat. Saute onion and garlic until soft and translucent, about 5 minutes. Stir in flour, nutritional yeast, and soy sauce to form a smooth paste. Gradually whisk in the broth. Season with sage, salt, and pepper. Bring to a boil. Reduce heat, and simmer, stirring constantly, for 8 to 10 minutes, or until thickened.