Vindaloo Beef Curry

1 cup chopped onion

1 clove garlic, finely minced

2 Tbsp butter

1/2 tsp. ground cumin

1 tbsp coriander

1 tsp ground turmeric

1/2 tsp dry mustard

1/2 tsp red pepper flakes or more to taste

Fresh ground black pepper to tate

1/2 tsp ground ginger

1 Tbsp. vinegar

2 lbs top round steak (1" cubes)

2 1/2 cups beef stock

2 Tbsp Fresh Lemon Juice

Hot, cooked rice

1.  Cook onions and garlic in the butter in a a heavy kettle until the onions are wilted. Add spices and vinegar and stir briefly.

2.  Add the meat and cover. Cook, stirring occasionally, for about ten minutes until the meat loses color.

3.  Add the stock. Cover and cook for 45 minutes or until the meat is thoroughly tender.  Add lemon juice (to taste?)