Porterhouse Steak Recipe with Beer Sauce - Great British Chefs

Ingredients

• 1 porterhouse steak
• salt
• pepper
• neutral oil, such as groundnut or grapeseed oil
• 25g of butter
• 1 banana shallot, peeled and finely chopped
• 150ml of milk stout, or another soft and creamy dark beer
• 1 bulb of garlic, roasted until soft
• 1 tsp Dijon mustard
• 450ml of beef stock
• 1 tsp sherry vinegar
• 1 beef marrow bone, split lengthways (ask your butcher to do this for you), marrow scraped out