BBC Food - Recipes - Beef fillet with wild garlic purée and a fricasse of wild mushrooms

Ingredients

• 50g/1¾oz unsalted butter
• 4 small shallots , sliced
• 1 garlic clove, crushed
• 300g/10½oz wild garlic
• 30g/1oz fresh chervil , chopped
• 30g/1oz fresh tarragon , chopped
• 150ml/5fl oz double cream
• pinch salt
• 2 tbsp olive oil/ rapeseed oil
• 75g/2½oz unsalted butter
• 4 x 120g/4oz beef fillets
• 100g/3½oz unsalted butter
• 1 shallot , finely chopped
• 200g/7oz assorted wild mushrooms
• 2 tbsp Madeira
• 100ml/3½fl oz beef stock or brown chicken stock
• 1 tsp wholegrain mustard
• 1 tomato , peeled, de-seeded and finely chopped
• 1 tsp chopped fresh tarragon
• 2-3 tbsp olive oil or rapeseed oil
• 12 asparagus tips
• whole fresh wild garlic leaves