Homemade Tonkatsu Sauce

Name: Homemade Tonkatsu Sauce
Cuisine: Asian, Japanese
Ingredients: ½ cup white sugar, plus 2 tbsp extra; 1 large onion, peeled and roughly chopped; 1 carrot, roughly chopped; 1 apple, cored and roughly chopped; 1 peach, pit removed and roughly chopped; 4 dates, seeds removed and roughly chopped; 2 bay leaves; ¼ tsp ground nutmeg; ¼ tsp ground cloves; 200 ml tomato passata; 100 ml red wine; ¼ cup rice vinegar; 2 tbsp Worcestershire sauce; ½ cup soy sauce; 2 tbsp dark soy sauce