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Onion Salad: the recipe for a simple and tasty side dish made with red onions

Total time: 20 Min
Difficulty: Low
Serves: 4 people
By Cookist

The onion salad is an easy, tasty side dish, perfect to serve with grilled meats and fish, or fresh creamy or blue cheeses. It is traditionally made with red onions which are sweeter and less acidic than the white or golden ones.

In our recipe onions are blanched in water, flavored with rosemary, then seasoned with a vinaigrette, for a fragrant and aromatic final result. So let’s find out how to make a perfect onion salad by following our step-by-step instructions and tips.

Tips for making the Best Red Onion Salad

For a less sour and sweeter taste, you can replace the white wine vinegar with apple or pomegranate vinegar.

You can also enjoy your onion salad on slices of toasted bread, previously spread with a little robiola cheese and garnished with walnut kernels and speck, toasted in a pan.

For an Indian onion salad, add more spices such as curry powder, red chili powder, cayenne pepper and fresh herbs such as mint.

If you like to enjoy a creamier raw onion salad, add mayonnaise.

How to store Onion Salad

The onion salad can be stored in the refrigerator, in a special airtight container, for 1-2 days.


large red onions
White wine vinegar
1 tbsp
Fine salt
a pinch
Extra virgin olive oil

How to make Onion Salad

Peel the onions and cut them in half.

Immerse the onions in boiling water flavored with a few sprigs of rosemary. Cook them just long enough to soften them slightly, without destroying them. Drain and let them cool completely.

In a small bowl, collect the extra virgin olive oil, vinegar, a pinch of salt and add a little finely chopped rosemary. Stir vigorously.

Slice the cold onions not too thinly.

Arrange the onions on a serving dish, then spread the seasoning over the vegetables.

Finish by garnishing with a few sprigs of fresh rosemary and serve 6.

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