Crumbly and melting, easy and irresistible, at the catering company, we keep the dough for this shortbread on hand in the freezer for in-house treats and for extra hors d'oeuvres or snacks for a party that balloons at the last minute.
I first tasted this shortbread when my friend Gail Monaghan passed it around in a silver basket before a dinner party at her house. I took one bite and said, "OK, where's the pen? Hand over the recipe (there was a "please" implied): this is amazing and I need to put this in my book." She very angelically wrote it out nicely, and here it is.
Note:
Buy the absolutely best Parmesan (preferably Reggiano) you can find. Ideally, get a lump and grate it yourself. Look for a chunk with rind on only one side, not two.