Chilled Green Bean Vinaigrette - cooking recipe

Ingredients

3 lbs fresh green beans
1/4 - 1/3 cup onion, finely chopped (or to taste)
salt and pepper
1 tablespoon Dijon mustard (or to taste)
3 tablespoons white wine vinegar
1/2 cup olive oil
1 teaspoon lemon juice (or to taste)

Preparation

Steam beans until JUST crisp-tender (do not over cook, the texture should be firm not soft).
Rinse/plunge in ice water or very cold water; drain very well.
In a bowl combine oil, mustard, wine vinegar, lemon juice, salt and pepper (adjusting all ingredients to taste).
In a large bowl place the beans and chopped onions.
Pour the vinaigrette over, and toss well to combine.
Adjust salt and pepper to taste.
Cover and chill for a minimum of 5 hours.