Compare this with the story arc on nuBSG where the ships completely run out of all food and people start to starve, get too weak to move, and are in physical pain.
There's one scene in the pilot's bunk room where one of the pilots is at the point of death, and the other pilots scrape together the last of their food, which amount to about one cracker worth of crumbs, and feed it a pinch at a time into the starving pilot's mouth.
I haven't seen nuBSG for years, and that scene is still vividly with me.