BEEF STROGANOFF

INGREDIENTS:

500g  beef (fillet)
1  medium onion
30g  mushrooms
50g  butter
200g  sour cream
1  tbsp tomato puree (optional)
1/2  tbsp  flour
A pinch of mustard powder
150ml  stock (2/3 cup )
Salt and pepper to taste

Method:

• Cut beef into 2" strips and sprinkle with salt and pepper.Chop onion very finely. Wash and slice the mushrooms.
• Melt butter in cooker and fry onion till golden brown.
• Add mushrooms and beef and fry for 4 minutes. Add stock, tomato puree, half the sour cream, salt and pepper.
• Close cooker, bring to full cooking pressure on maximum heat. Reduce to medium heat and cook for 18 minutes.
• Allow cooker to cool gradually before opening. Add flour blended with the remaining sour cream and mustard powder.
• Bring to boil and serve hot.