It's a long form piece - it's not news. And there is a summary:

"Locked up for their part in a drug ring, two inmates swapped manufacturing meth for manufacturing yoghurt.

Eva Corlett finds out how they turned their product into a prison trading commodity so popular that yoghurt culture was smuggled between prisons."

What else are you looking for exactly?

The TL;DR is two guys, in prison for making meth, learned how to make yogurt from prison-available ingredients, and it kept them going through the hard times in prison. Now they're out, they don't make yogurt but they are staying straight. It's a character story, not a business lesson with a three bullet-point redux.

And, in fact, paragraph two is the summary you were after:

> They don’t know it yet but that moment will change their lives. Not only will they go on to make yoghurt using heat from the radiator pipes running through their cells, they’ll turn yoghurt into a prison trading commodity so popular it will be smuggled between New Zealand jails. Wal and Dylan will become known as The Yoghurt Mafia, and their new obsession will give them a reason to carry on in a relentlessly bleak environment.

I'm not sure where your "if only" came from, but it's unjustified. Back in your can, Oscar!

Oh, wow. You and I left that feeling two completely different ways. I loved every aspect about that story and how it was written.