SWMBO was commenting on someone on her support group bemoaning a lack of yeast in these locked down times, and thus being unable to make bread.
SWMBOs solution was to note there are breads that don't use yeast - ISTR Jewish cuisine uses unleavened bread.
My suggestion was to make up some dough, and leave it outside to catch some wild yeast ... pretty much how it's imagined our ancestors discovered how to make bread (and beer :) ).
Is my vague memory it's best to do it near a fruit tree correct ?
I know I could google, but since no of us are going anywhere soon ...