Tomato Sauce Romanian-style

Description
In Romanian: Sos de rosii

Ingredients

 * 1 lb / 500 g boiled and strained tomatoes or 2 tablespoons tomato paste
 * 1 teaspoon sugar
 * 1 teaspoon vinegar
 * 2 tablespoons butter
 * ¾ cup beef broth or water
 * salt

Directions

 * 1) Place the water, tomato paste, sugar, vinegar and salt in a pan.
 * 2) Let come to a boil, add the butter and let come to another boil.