Okay, I'll tell you this time. 'Member, as Jack rides up after a hard day in the saddle (or a hard nite in the cat-piss tent) how Ennis is just finishing up the cooking, by salting the food in the iron skillet? And he's not sure if any salt is coming out, maybe the salt got wet and is all clogged up, or maybe the holes got clogged up, so he "salts" his glove? Ennis's salt shaker appears later on in the story too, at pivotal points!