1, the meatballs in the risotto floated up, after another 5 minutes or so can be cooked. (Specifically depends on the size of the meatballs, too large meatballs need more time to make the center of the meatballs cooked through).

2, risotto in the veggies, with a spatula to gently press a little whether it is easy to disconnect.

3, the easiest way is to taste, to see if the sandwich.