Eggs shells don’t work unless they’re ground into a very fine powder.

I don’t know the answer to this question. You may be right. And yea, I can see limestone in the right doses working.

And we could always extract the nutrients from our waste. Close the cycle: what goes in, goes out. We’re already using biosolids in agriculture.

This thread is weird. It seems like you all never heard of compost.

Also, Myanmar. Everone seems to forget the young democracy trying to survive.

Okay, concerning 2 I thought you meant, why count and buy exactly this number. But it’s actually realistic, for a big family, or for desserts for a party, etc.

I think 2 and 3 are the same problem.