- 1 teaspoon olive oil
- 1 (4 ounce) can sliced mushrooms
- 1/2 cup diced red onion
- 1 clove garlic, minced
- 1 1/2 tablespoons balsamic vinegar
- 1 1/2 tablespoons Worcestershire sauce
- salt and ground black pepper to taste
- 1/2 teaspoon white sugar
- Heat olive oil in a saucepan over medium heat; add mushrooms, onion, garlic, balsamic vinegar, Worcestershire sauce, salt, and black pepper. Bring mixture to a simmer and cook until liquid is 2/3 reduced, about 10 minutes; sprinkle with sugar. Cook and stir until sugar is dissolved, 1 to 3 minutes.