Ghom's Log is a tome in the Act III of Diablo III. It is found in the Larder on a half-eaten corpse of the Keep Guard (rightmost corner). The tome contains Ghom's orders to his retinue.
It reads as follows:
The human prisoners are panicking now? They must have noticed that fresh meat only comes after one of their number is dragged away, screaming... This will not hold. Slaughter the ones who starve themselves and feed them to their hungry friends. When those ones are fully stuffed... I will be ready to dine.