I've noticed this phenomenon more than once. Food tastes significantly more flavorful when eating it outside in cold air. I'm not sure if it's the change of temperature going from warm to cold, or just being in the cold. An exhaustive search on google has led to zero information on the phenomenon.
It first happened with a piece of toast, i took it with me out into the cold, then I started trying out other foods. Some have a more dramatic difference in flavor than others. Some are extremely more flavorful than others, while some foods show little difference.
A couple of things I've walked outside into the winter air with that i recall having a VERY dramatic difference are walnuts, a cuban sandwich, carmel/cheese popcorn mix.
This may explain why maxwell street tacos taste so much better in the winter. I always just thought it was because the cold made me hungrier or something.
Has anyone else noticed this, or have any scientific explanation/hypothesis for it?
Part of the secret of a success in life is to eat what you like and let the food fight it out inside.
-Mark Twain