well, it doesn't explain HOW hay cubes are made, but does provide the positives and negatives--And yes, soaking them does help with winter water intake--At BigBrother's place, I would soak them, by the woodstove, and twice daily, the buns got a good serving of 'hay porridge'-- which also included whole oats, BOSS, Barley, Safflower, etc. They also got stem hay in their cages, as bedding and feed-