Vegetarian watermelon tartare from the Big Green Egg

Ingredients

• 1 seedless watermelon of approx. 2½ kg
• 1 shallot
• 1 tbsp olive oil
• ¼ tsp madras curry powder
• 4 seedless snocciolate pitted olives
• 1 small piece of sushi ginger
• 1 tbsp soy sauce
• 1 drop of sriracha sauce
• 20 unsalted cashew nuts
• 1 spring onion
• 4 radishes
• 2½ cm radish
• 1 large gherkin
• 120 g feta cheese
• 4 sprigs of flat-leaf parsley