Foryoueats: Watermelon Salad

Ingredients

• 1 kg / 2 lbs watermelon
• 1 small Spanish red onion , finely sliced
• 3 tbsp red wine vinegar
• Salt and pepper
• 5 tbsp extra virgin olive oil
• 1 1/2 tbs fresh mint , roughly chopped
• 75 g / 3 oz Danish feta cheese , crumbled into medium size pieces
• Whole mint sprigs , to garnish