A slightly more complicated recipe/ingredient/substitute that may provide another lens through which to view the "pesto problem'
"Consider one group of bio-hackers who meet in the lab each Monday night to work on a project that sounds like a contradiction in terms: They’re trying to make cow’s milk cheese without the cow. Using mail-order DNA, they’re tricking yeast cells into producing a substance that’s molecularly identical to milk. And if successful, they’ll turn this milk into cheese. Real cheese. But vegan cheese. Real vegan cheese. [...] They also hope to engineer cheese based on the milk of the narwhal, the most outlandish mammal they could imagine. They hear the milk has the consistency of toothpaste."