Grilled Sardines with Grapefruit-Mint Salsa

Ingredients

• 50 ml (1/4 cup) white wine vinegar
• 30 ml (2 tbsp) freshly squeezed lemon juice
• 60 ml (1/4 cup) olive oil
• 75 ml (1/3 cup) red onion, chopped
• Coarse (Kosher) salt and freshly ground pepper, to taste
• 1 pink grapefruit, sectioned, membrane removed
• 1 white grapefruit, sectioned, membrane removed
• 30 ml (2 tbsp) red onion, diced
• 3 sprigs fresh mint, leaves only, shredded
• 15 ml (1 tbsp) olive oil
• Salt and freshly ground pepper, to taste
• 12 sardines, 90 g (3 oz) each, cleaned, boned and opened
• 1 L (4 cups / 120 g) mesclun (gourmet salad greens)