I did a little calculating from my food spreadsheet.

How many calories/day (2.33 days) if you took 28 ounces of:
Mojo bars -- 1350
Freeze dried spaghetti -- 1440
Freeze dried apples --- 1680
Almonds -- 2160

Only a diet of all nuts would you get enough on 28 ounces for a 3-day trip of what I consider minimal calories. I think people over-rate the nutritional value of freeze dried meals.

I also know people who eat a huge breakfast and take a deli sandwhich on Day 1 - and do not count the sandwhich in their food weight - a bit cheating on your ration weight!

Here is another idea - no food at all! That eliminates the bear cannister, stove, spoon, cup, cookpot, gas, and probably could eliminate toilet paper too! Wow, what a weight savings. I have done a couple of these - it's called survival training.