If you are lacking in a nutrient, you could add that nutrient. If you were lacking protein, you could add meat to a pizza (with 3D-printing), Oleksyk added.
So nobody in the Pentagon has ever figured out how to just toss some pepperoni on the pizza, directly? (Guess there wouldn’t be any multi-billion dinero contracts for fancy new technological equipment...that way....)
Here’s the thing, of course if you are on base, you can prepare normal meals, and prepare them anyway you like or need to. They aren’t talking about replacing that, they are talking about replacing MREs. If they have to prepare and package those things in advance, then they cannot tailor them to meet any specific need.
Now, if you can manufacture the same kinds of food that would be in the MRE (or better food hopefully), right where the soldier is in the field, then you can customize it to whatever your needs of the moment are. I think that is what he was getting at.