Beef And Vegetable Stew

• 8 mediums
• 3 carrot bias (cut)
• 2 celery ribs bias (cut)
• 1 leek bias (cut)
• 1 salt and pepper
• 700 gr beef chuck in (cut)
• 230 ml tomato sauce
• 200 gr tiny peas (frozen thawed)
• 120 ml beef stock
• 30 ml vegetable oil