Sicilian Salad

Name: Sicilian Salad
Prep time: 10 min
Cook time: 30 min
Total time: 30 min
Yield: 4 portions
Ingredients: 400 g red onions; 50 g red wine vinegar; 1000 g water; 1 pinch fine sea salt; 1 lemon; 750 g large raw prawns, peeled; 300 g cherry tomatoes; 4 sprigs fresh parsley; 1 garlic clove; 50 g extra virgin olive oil; 1 tsp fine sea salt; ¼ tsp ground white pepper