In reply to j Barbier:
If this is the same as the 'Himalaya Multifuel' then it's a good stove. I have one and prefer it to my XGKs.
If melting snow, I go on 300ml per person per day, in cold regions, but that is really only two meals. If you are just trekking, no snow melting, but boiling litres of water and cooking three meals in moderate temps, you should still get by on around 150ml pppd.
Really a lot depends on cooking technique and choice of food etc. I think Kirkpatrick did a piece on efficient cooking in a High not so long back. Best to do a short trial run at home, cook the things you will take, measure how much fuel you use.
D