Hi! I was wondering if anyone here could help. I'm having people over for dinner on Friday and my best friend is vegan. We're having kebabs out on the grill, and he asked about having new potatoes on his. Do I need to parboil or prepare them in any certain way beforehand or will they cook completely while on the grill? I didn't want to overcook the peppers/mushrooms/onions while attempting to make certain that the potatoes were cooked fully.