Summary

Ingredients

• 1 onion (s)
• Sugar, brown
• Balsamic vinegar
• Wine, red
• Clarified butter
• salt and pepper

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Instructions

1. Cut 1 onion into fine strips, sauté in clarified butter, then add sugar (brown) let the whole caramelize, deglaze with a little balsamic vinegar, let it boil down, then add a dash of red wine and reduce again.
2. Season to taste with salt and pepper (if necessary, add balsamic vinegar or red wine)
3. When the onions have a nice dark color, let them cool.
4. Then after roasting the steak I put it in the pan and deglazed it with red wine.