There’s some logic in putting it last. First make sure you get nutritious food. Once you have, you can safely enjoy some indulgence. First of all it won’t displace actual nutrition, because you took care of that first. And second, you’re more likely to indulge moderately because you filled up on real food first.

So if there is any method here, I think it’s to put dessert last, not to put dessert before bed.

However none of this explains why, after a meal, I immediately get sugar cravings.