Beef Pot Roast, Oriental Style

• 2,300 gr beef eye roast (chunk boneless)
• 120 ml water
• 65 gr green pepper (diced)
• 60 gr onion (chopped)
• 60 ml soy sauce
• 60 ml dry sherry wine
• 40 gr mushrooms (sliced drained)
• 18 gr cooking fat
• 16 gr cornstarch rice (hot cooked)
• 5 gr ginger (fresh grated)