500g/1lb 2oz chestnut mushrooms
2 garlic cloves, chopped
½ onion, chopped
1 tsp balsamic vinegar
salt and freshly ground black pepper, to
1 tbsp olive oil
1 tsp black salt
½ tsp ground turmeric
100ml/3½fl oz vegetable stock
40g/1½oz shelled walnuts
bread or crackers, to serve
300g/10½oz block firm tofu, chopped