Preparation
Clean the lettuce hearts, divide into leaves, wash and spin dry. If necessary, tear the leaves into smaller pieces and place in a bowl.
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Wash the tomatoes, quarter and remove the stem and seeds.
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Cut the tomato flesh into small cubes.
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Mix the tomato cubes with the salad.
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Wash the mussels, pat dry and fry in a pan in hot clarified butter until lightly browned.
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Drizzle with 1 tbsp. dressing.
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For the dressing, whisk mustard, lemon juice, salt and sugar. Add the oil and whisk.
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Season the salad with the rest of the dressing and spread it on plates. Arrange the mussels next to and on top, lightly sprinkled with salt and serve immediately.