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,
 * 3/4 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.