Vegetarian Turkey?

I have a vegetarian son who is looking forward to Thanksgiving because he can have Quorn roast. Never mind that he has these products every week, as it is a great source of protein for him.  Made from a myco-protein (meaning it’s derived from mushrooms, but they don’t taste anything like mushrooms) Quorn products are soy-free. They contain fiber and no cholesterol.  We like all of their products and we are not all vegetarians, but I am trying to eat meat less and less. Their patties are far better than any other veggie burger product out there and even my little fussy eaters adore their Chik’n Nuggets. These are very versatile analog meats. They are not, however vegan.