Sort of imagine a bowl of all bran mashed up with water, battered flat, molded into a square shape and then heat treated to take all the moisture out of it and left in the Sahara desert for about a year and that's what they're sorta like ;-)
Saying that, I don't mind them, they are incredibly filling (I couldn't eat all 5 at once) and I squish an egg or banana onto them for brekkie which keeps me going for hours!!! (drink plenty of fluid with them, also helps to scrape them off the roof of your mouth, lol!!)