Goulash

• 8 garlic (cloves)
• 2 onions (sliced)
• 1 water to cover roast
• 1 sour cream
• 1 cayenne
• 1,400 gr beef chuck cross rib roast
• 525 gr tomatoes
• 160 gr tomato paste
• 85 gr mushrooms
• 3 gr peppercorns (whole)