Found this on King Arthur Flour where it is said the head baker Martin Phillip created this. It's mild, sweet honey flavor and soft and tender crumb yield slices ideally suited for any sandwich, specially grilled cheese. It is best made in a Pain de Mie Pan which I have posted a photo of. It also has the added benefit of coming together fast and easy. I'm guessing at serving size as it depends on how it's sliced and how you use it. The name comes from the type of pan it's made in