Beef Bourguignon

Name: Beef Bourguignon
Ingredients: 1 medium brown onion peeled, quartered; 3 garlic cloves peeled; 100 g speck or streaky bacon thinly sliced; 20 g olive oil; 700 g gravy beef trimmed and cubed medium/small; 300 g liquid beef stock or 300 g | 10.6 oz water + 1 Tbsp beef stock concentrate; 200 g red wine I used Pure Vision Organic Merlot; 100 g small shallots peeled, whole; 50 g tomato paste; 2 x bay leaf; 5 sprigs of fresh thyme; 1/2 - 1 tsp salt; 1/2 tsp cracked black pepper; 100 g button mushrooms halved