Mussel salad in balsamic vinegar

Ingredients for 4 people: 3 tablespoons of balsamic vinegar, 1 tablespoon of sifted mustard powder, 1 clove of garlic, 1 soup spoon of fresh tarragon, 3/4 of a cup of olive oil, 12 peeled prawns, 12 cooked, shelled mussels, 1 salmon steak, cooked and flaked, 10 cooked fine beans, 10 cooked yellow string beans, 1 grilled yellow pepper, thinly sliced, 12 pitted black olives, salt, pepper, lemon, lettuce leaves.

Preparation:

In a small bowl, mix the vinegar, mustard, garlic and chopped tarragon.  Season well.

Whisk in 9 tablespoons of olive oil. Add the lemon juice to taste and set aside.

Heat the rest of the oil in a pan over a medium heat. Add the prawns and cook on a high heat for 3 minutes. Season well.

Place the prawns into a large bowl.
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Add the cooked mussels and the salmon to the prawns.

Chop the beans into 2.5 cm lengths and add to the bowl.

Add the pepper and the olives.

Generously season and add the vinaigrette.