Vegetarian gravy recipe | delicious. magazine

Ingredients

• 2 tbsp olive oil
• 1 onion, finely chopped
• 2 celery sticks, finely chopped
• 1 large carrot, finely chopped
• 1 large leek, finely chopped
• 1 tbsp plain flour
• 500ml vegetable stock (made from good-quality vegetable bouillon)
• 1 tbsp soy sauce