[gfna]

I would also like to see a study which considers the age of the pecorino. I seem to have an easier time of getting the proper emulsion with older drier pecorino, and less risk of clumping

[dboreham]

Costco peccorino works well.

[fosk]

Whole Foods has superior quality pecorino, the one with the black crust.

The last 10% quality improvement is the hardest to achieve without good ingredients, even if you can make it work otherwise.