He ordered 11 pieces of the same type. But there is one distinct pieces. Because in the kinds of people who are not like food that can be ordered instead.
He ordered 11 pieces of food that are the same for each type, but there is one piece that is different because in one type of food, there will be people who don't like food that's to order another dish instead.
he ordered, 11 pieces of the same in each category, but there is one piece of one type of food in a different because there will be people who don't like it, so there must be other food instead of order