Beef and porcini mushroom stew recipe

Ingredients

• 70g dried porcini mushrooms
• 2kg British chuck steak or braising beef (see tip), cut into 3cm cubes
• 3 tbsp extra-virgin olive oil
• 5 celery sticks, finely chopped
• 1 garlic clove, sliced
• 3 small red onions, finely chopped
• 1 tbsp roughly chopped fresh rosemary
• 2 x 400g tins chopped tomatoes
• 375ml red wine, such as chianti classico
• 8 baking potatoes
• 8 bay leaves
• Salted butter to serve