That is a good question Topsy. Most people only do puree for the first month to 2 months (I was on regular solid food by week 8). During that time you are still very swollen inside and feel fuller even when you have nothing in your pouch. But to answer your question, many people do feel 'empty' quicker and do still have 'head' hunger during the puree phase. I mistook my head hunger/empty feeling for actual hunger during this time but now realise that I wasn't really hungry yet. When you do finally do get true hunger, you will know the difference, trust me.
That stupid 'head' hunger is tricky because you have to fight it. One way to do this is when you feel it, take several sips of water. If it is true hunger you feel, the water will send a message to your brain that you are eating and the hunger will go away for a couple of minutes. If the sips of water have no effect on your hunger, then you know it is 'head' hunger and you are not physically hungry.
Hope that answers you question, just shout if it doesn't.
Nic
PMSL - we could approach Paul McKenna as a group and ask him to hypnotise us all lol
Seriously the head hunger does go away, i had awful problems with bread, hot crusty bread, everywhere i went there were sandwiches on display, or bread on shelves, just bread bread bread everywhere ! seriously i used to stand outside the coffee bar in charing cross station with my mouth watering.
Slowly though the craving does go away, and now i dont get the bread hunger anymore, i do now treat myself to a slice of brown whole grain toast on Sundays as my weekly treat, normally with a grilled sausage lol and i've also been know to have on occassion the odd fillet o fish ! but thats about all the bread i can manage.
