Slow Cooked Beef Onglet - Ake and Humphris Perfect Wine Pairing

The chef at Rudding Park cooked for over 300 people at Stray FM's Local Hero Awards, and the main course was slow cooked beef onglet – salt beef and horseradish potato, white onion puree asparagus and broad beans... but what wine would Ake and Humphris pair with it?