Zesty Mordant, aka Zesty Cheese Doritos, are my absolute favorite flavour of taco chips. Love 'em, but they're addictive as shit, so I try not to buy 'em too often.
Anyway, this flavour is unique to Canada because Frito Lay inherited it when they bought Hostess. (Way) back in the day, these little gems used to be called Hostess Taquitos, and Zesty Cheese was always the most popular flavour, so I guess Frito had to keep 'em. There was another flavour, Chili or Taco or some shit that was awesome, but never made it into the Dorito family.
Hell, I'm gettin the munchies just writing about this.