Balsamic Beurre Noir - cooking recipe

Ingredients

2 teaspoons butter
1 clove garlic, sliced
1/3 cup aged balsamic vinegar
1 teaspoon minced red chile pepper
1/2 teaspoon tomato paste
salt and pepper to taste
2 tablespoons cold unsalted butter

Preparation

Melt butter in a skillet over medium heat until it foams. Stir in garlic; cook until edges just start to turn golden, about 2 minutes.
Stir balsamic vinegar into skillet, bring to a simmer and cook over medium heat until vinegar is reduced by 2/3 to create a thick sauce, 1 to 2 minutes.
Stir in chile peppers and reduce heat to low.
Whisk in tomato paste, salt and black pepper. Remove skillet from the heat.
Stir in butter; whisk constantly until the butter melts and is completely incorporated into the sauce.