The packaging is resealable mylar bags with several servings per bag. There is a bit of air in the bags, but not much. They seem to reseal securely. The bags weigh on average 20% more than expected going off the packaging information, including the weight of packaging itself.
Going by the info on the bags, here is what I get.
1. Apple Cinnamon Oatmeal: 368 cal. / 100 g
2. Tropical Fruit Medley: 228 cal. / 100 g
3. Cheesy Chicken Rice Casserole: 276 cal. / 100 g
4. Vegetable Beef Stew: 350 cal. / 100 g
5. Instant Potatoes: 179 cal. / 100 g
6. Cheesy Potato Soup: 311 cal. / 100 g
1168 calories per day is built into the meal plan, with 40 grams of protein. Assuming 20% more food than what is declared on the packaging, that makes 1401 calories per day and 48 grams of protein. Perhaps another 400 calories could be added by using olive oil liberally with the recipes.
The cooked meals require adding the mixture to boiling water and simmering for 20-25 minutes. I think the same effect could be achieved by taking the pot of boiling liquid off the stove and letting it sit in its "pot cozy" for the same amount of time. The water will slowly cool, but it should still be hot enough to do the trick. 25 minutes is a long time to wait for dinner, though.
I will report on my opinion of the food in 3 days...
Oatmeal -- really tasty; I could imagine eating it for days on end
Tropical fruit medley -- pretty good
Casserole -- really tasty
Vegetable beef stew -- didn't like it much
Instant potatoes -- good
Potato soup -- decent
Since I will have only one pot to use during my hike, I can't pour soup over the potatoes.
I liked much of the Responder kit, but not all of it enough to use it to supplement my rations.