Ozzie is 14kgs lighter after malnutrician in Madagascar. He'd had a hard time finding the food. Jesus, I think to myself, training in the Pennines led me to the same conclusion. Food's gonna be the biggee. Fortunately I have a trick up my sleeve. Front loading balance pockets (thanks to AK). See camp illustration below.
These 'Aarn' packs will increase our food carrying capacity to about 30 litres, and simulatenously reduce back strain by shifting the centre of gravity closer to the pelvis.
That, and I've found these beauties are sold everywhere... 700 calories per pack.