Vacuum seal the following in one pouch:
1 Cup real rice (Not 5 minute rice). I like jasmin,
2 tsp powdered or one cube beef bullion,
1/2 Cups freeze dried vegetables, e.g. carrots, broccoli, etc,
4 oz. beef or pork jerky, and
the O absorber from the jerky pack.
When you are ready to eat, boil 3 cups of water and add the contents from the above pouch. Simmer for 20 minutes with top on the pot. At the 20 minute mark take the lid off your pot and you may need to add some water from a dash up to 1/2 cup.
Once cooked, stir let sit 5 or so minutes and eat. I save Chinese spice packets like, soy sauce, Korean hot paste, duck sauce, etc and add if needed.
I make up a similar pack but use Couscous and olive oil instead of rice. These packets last till you see maggots in the rice which I only saw once as long as I have been doing this.
One cup of rice becomes ~ 2 cups when cooked. There are 185 carbohydrates in 1 cup of cooked rice. Add the bullion for sodium & flavor, veggies for vitamins & regularity, and the jerky for protein - One pouch a day will be more than enough to keep ya' going for a day. I try to keep my normal daily carb rate under 150 carbs a day as a comparison.
If you are forced to walk home living out of your BOB you will have ~ 370 carbs per pouch (185 carbs x 2 cups cooked rice = 370 carbs) a day to draw nourishment from.
In another vacuum sealed pouch I have tea bags, instant coffee sticks, and sugar packs. Keep in mind though that drinks high in caffeine isn't good as it makes ya' pee a bunch BUT, you need some comforts.
I also filled half way a 1 pnt Ball canning jar with quality olive oil. That gets vacuum sealed too and is included for flavor, fat, and if a have to fry up some protein I might catch, kill or trade for.
Just some thoughts that has worked for me.