Mushroom and Lentil Stew

Ingredients

• 1 brown onion, diced

• 2 carrots, sliced

• 2 stalks of celery, sliced

• 150g button mushrooms, halved

• 4 garlic cloves, crushed

• Sprigs of fresh thyme

• 2 tablespoons soy sauce or tamari

• 4 or 5 medium potatoes, peeled and cut into quarters

• 1 400g can lentils

• 1 400g can whole tomatoes

• 3 cups vegetable stock

• Salt and pepper to taste