Hi Mutley,
I haven't worried much about kJ when we walk, I just add dessert to every dinner which we can skip if we are full. So my experiences below are mainly based on my ongoing quest for proper nutrition and good health.
We use protein powder on our breakfast every day, mixed in with porridge, muesli or as a milk shake so it definitely comes along when bushwalking. Proteins can be hard to balance out because many of them need refrigeration or are just heavy to carry. Many of the preserved meats are also very high in salt/sodium which has other issues. It is claimed that whey isolate or concentrate is 'better', but there is also a nice pea protein available (mentioned above) for vegetarians. Most brands come in natural, vanilla or chocolate flavours. You can use the natural flavoured powder as a thickener instead of corn starch or Deb mash.
I spoke with a nutritionist about food before we went on our last 8 day walk. When I brought up electrolyte replacements, she suggested we go to a pharmacy and look at the ingredients of any electrolyte replacement to make sure they don't have too much sugar. She specifically said to steer clear of the bottled drink versions like Gatorade which are loaded with sugar - and IMO are way too heavy to carry on a multi-day walk. Generally, if you are eating well you shouldn't need electrolyte replacements unless you are sweating like crazy. They just cost a lot of money when the main thing is keeping hydrated. Having said that, we used Hydralyte Sports (bought at our local pharmacy) in one of our water bottles on high intensity days with a lot of climbing. It comes in 18g sachets which are mixed in water to make a 600mL drink. It's not cheap but we didn't use it that often.
At first glance, the musashi product looks to be pretty high in sugar. A 60g serve has 32.6g sugar. In comparison, a single serve of Hydralyte weighs 17.9g and has 12g sugar. To properly compare, you'd need to see how many serves they recommend per day and then look at the total sugar (and other nutrients) consumed. But if their 'serves' are comparable then that is a huge difference in sugar.
To be honest, I didn't do much research. I just walked into the pharmacy and said I want an electrolyte replacement that is low in sugar and good for intense exercise. If I was going on a longer walk of several weeks I think I would compare a range of products to see what each was offering. BTW, we still have 8 sachets left out of the box of 12. At this rate, the box may last us a year so maybe it is good value for money! FYI,
http://www.hydralytesport.comIf you are mainly looking to build kJ intake then these other links might be of interest:
Calorie and Fat Gram Chart
http://www.ntwrks.com/~mikev/chart1a.htmAnother list
http://www.ultralightbackpackingonline.info/foodfacts2.htmlhttp://andrewskurka.com/2012/food-planning-for-multi-day-hikes-and-thru-hikes/http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=53831http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=55651Cheers
sim1