By Alan Roettinger As a private chef, I was privileged to observe the wealthy, powerful and famous up close. I discovered that although they never – ever – had to eat anything they didn’t like, some of them actually had surprisingly simple tastes. What surprised me even more was that during the holidays, nearly every single one of my clients reverted to their old family favorites. These normally (sometimes unbearably) sophisticated people genuinely preferred to eat exactly what mom used to make, right down to the mashed yams with mini-marshmallow topping. Something about the holidays brings us all together...