Klingons sure love their gagh. It seems like they're eating the creepy-crawlies every time we see Klingon food. Even if there are other Klingon foods, it raises the question: Does gagh have all of the nutrients that an adult Klingon needs? Can one live on gagh alone, without supplementation from other foods?
Obviously, you'll need a warrior's drink to wash them down, like blood wine or prune juice. You can disregard that for the purposes of this question.
Related: Are Klingons obligate carnivores?