Using an Enterprise Keyword column as a refiner in Modern Search

We recently received a question about how an Enterprise Keyword column could become a refiner in PnP Modern Search

For a guide for how to enable and add the Enterprise Keyword column see SharePoint Mavens video on YouTube

In this case I have added an Enterprise column to my document library and added a number of values:

However, in order for those values to become refinable we must map the crawled property to a RefinableString, but I don't know the internal name of the column, and therefore I have no idea which crawled property to look for....

In the library settings you can see the Enterprise Keyword column, and if you hover the mouse over the field, a link will appear at the bottom of the screen. And there is the internal name of the field: TaxKeyword

Map a RefinableString to TaxKeyword, wait , or set up you search page while you wait. Add the RefinableString to Selected properties in the Results web part, and then add it as a Refiner in the Refiner web part, and voila: