My survival guide says a bag of Doritos is almost 100% grease and super combustible,, great for starting a survival fire,,
DO NOT use the slick inserts in the newspaper, or slick magazines to start a fire,,,
The paper is slick because there is a high percentage of clay mixed in the paper,,
clay will not burn, the clay simply stops the air flow,,, and makes starting a fire difficult.
I suggest that you try the Doritos in a non survival situation first. A lot of those tips only work if the stars are aligned right.
I almost posted about the coated paper in the "Pet Peeves" thread... I hate scrounging for newspaper when I always have a pile of junk mail on coated paper, waiting for trash day.