Salsa. It has to be the kind you buy in the refrigerated section, not a glass jar on the dry-goods shelves with "Pace" or a similar name on it. Seriously, the difference is like that between homemade soup and canned.
Chocolate chips. I've fallen totally in love with the 60% cacao bittersweet Ghirardelli ones. Every other type, even other grades of Ghirardelli chips, now disappoint me.
Honey. Must be raw. Ideally from around here, or at least this continent, but I've made exceptions. Raw is not only far tastier, but healthier. And don't you dare microwave it to warm it up, as this destroys the good enzymes.
In my best ethical moods, I also choose food with labels like "organic" and "no antibiotics," but the items listed above are more about food snobbery--or love of what I eat, if you will.
What are yours?