Beef Pot Roast

Ingredients

• 2 kg beef chuck
• 20 g salt (for seasoning the beef chuck)
• 5 g pepper (for seasoning the beef chuck)
• 80 g celery
• 150 g carrots
• 225 g onions
• 150 g turnips
• 150 g potatoes
• 100 g mushrooms
• 10 g garlic
• 25 g vegetable oil
• 2 tbsp flour
• 1 tbsp Worcestershire sauce
• 2 tbsp red wine vinegar
• 1 tsp chilli flakes
• 20 peppercorns
• 800 ml hot water
• 1 tsp plain flour (for thickening the gravy)