1 - 1 1/2 lbs. stew beef
1/2 c. diced onion
1/4 tsp. dry mustard
1 1/4 tsp. paprika
2 tbsp. brown sugar
1 1/4 tsp. salt
1 tbsp. Worcestershire sauce
3 tbsp. vinegar
6 tbsp. ketchup
1 c. hot water
3 tbsp. flour
1/2 c. cold water

Brown beef cubes and onion. Mix mustard, paprika, sugar, salt, Worcestershire sauce, vinegar and ketchup. Blend and add to beef cubes. Add hot water. Cover, bring to boil, lower heat and cook until tender, about 2 hours. Remove cover. Mix flour and water and add to meat mixture. Cook until thickened.