I just assumed it was because they secretly wanted me to use SmartTube

Dry beans, rice, oatmeal, eggs and milk. Buy the plain bulk containers if you want the best unit cost. While eggs and milk have gone up in price, they can still be found cheap enough at the warehouse stores.

Don’t skimp on a variety of greens and fruits!

With a few mods you should be able to get a functioning kitchen coffee scale machine