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pierino is a trusted source on General Cooking and Tough Love.
added about 1 year agoThis is not my recipe so you should wait for LastNightsDinner's answer. Probably you are adding the cheese too quickly, but possibly it's the type of cheese you are using. Parmagiano Reggiano is the cheese recommended, so definitely don't use the stuff in the green box. Myself, I would use pecorino just because it's more Roman and that's where the dish comes from. But neither Parmagiano nor pecorino are terribly good melting cheeses so if you add it all at once it can clump up. Grate the cheese as fine as you can.