'Purse pickles' (or '
pocket pickles') is a collective term for leftover condiments, side veggies, or other sauces kept on
one's person after a meal, in anticipation of the next meal.
Purse pickles are almost always acquired from fast food or fast-
casual restaurants, and are almost always used on meals of those types.
Anyone who is frequently in possession of
pocket pickles is a 'tartar toter.'
A variant of this term is 'glovebox garnish,' which applies to similar items which are stored in a vehicle.
Any vehicle which frequently contains glovebox garnish is a 'tartar trove.'
Hungry Taco Lover: "God, these tacos are so
dry. What kind of purse pickles you got?"
Tartar Toter Friend: "I've got some jalapenos and hot sauce from when we went to Taco Time yesterday."
Hungry Taco Lover: "
Awesome!"