Nope hadn’t seen that before. Thank you! Ironically I am not a big efficiency person but where I am very interested in efficiency is foods. Like what food has the best amino acid profile for the dollar, that kind of thing. And this appears to be that.
That site is amazing and engrossing. Thank you for this link - I think I'm going to loose myself in excel for a few hours. Nutrients/calorie and nutrients/dollar are incredibly useful metrics for anyone while shopping!
It's not really useful. It's extremely easy to get plenty of nutrients and calories extremely cheaply, but that's not what people are paying for when they shop for food.