Grilled Halibut & Chard with Gremolata Topping

Ingredients

• 2 cups water
• 1/4 cup red wine vinegar
• 1/4 cup sugar
• 1 tsp salt
• 3 black peppercorns
• 1 sprig thyme
• 1 large red onion (thinly sliced)
• 1/2 cup parsley (minced)
• 1 tbsp lemon zest
• 1 clove garlic (minced)
• 1 tbsp extra virgin olive oil
• pinch red chili flakes
• 1 bunch Swiss chard (washed, dried and stems removed)
• 2 tbsp extra virgin olive oil (divided)
• Salt and pepper (to taste)
• 4 halibut fillets ((about 175 g each))