Scottish Mushroom Stew

Name: Scottish Mushroom Stew
Cuisine: European, British
Ingredients: 1 tbsp olive oi;; 2 onions, halved and sliced; 2 cloves garlic, crushed or finely chopped; 1 large carrot, cut in half lengthways and sliced into half moons; 16 large closed cup mushrooms, sliced; 1 1/2 tsp dried thyme (or fresh); 1 tbsp flour; 400ml/1/2 cups vegetable stock (2 cubes); 4 tbsp red wine; 4 tbsp vegetarian worcestershire sauce (see substitutes in notes); 2 tbsp tomato puree; salt and pepper