How to cook sweet and sour balsamic onions, recipe with ingredients necessary for cooking in a pan in butter, with tomato sauce.
Ingredients for 4 portions
- 1 teaspoon of sugar
- 1 tablespoon of balsamic vinegar
- salt
- pepper
- 500 gr. of spring onions
- 40 gr. of butter
- 1 tablespoon tomato sauce
Preparation of onions in balsamic vinegar
First of all peel the onions, then wash them and immerse them in a pot with boiling water, taking 3 minutes to scald them, after which drain them.
Melt the butter in a pan, add the onions making them flavor for a few minutes. Add the tomato sauce previously dissolved in half a glass of hot water, add salt and pepper to taste.
Cook the onions over medium heat for about 25 minutes with a covered pan, stirring occasionally using a wooden spoon. Add a spoonful of vinegar and a teaspoon of sugar, mix by cooking for a further three minutes.
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Once cooked, transfer the onions to a tray, wetting them abundantly with the cooking sauce, then serve on the table while still hot.