Buttery Flavor Missing

[AJ72]

Hi Guys,
I am getting very close to making my favorite pizza.  My crust and sauce are perfect for me, and I am using Grande East Coast Blend for my cheese.  However, the overall flavor profile of my pizza is lacking a buttery flavor that my local shops' pizza's have.  What is missing?  Are they adding something to their cheese that I don't know about? My favorite pizzeria's owner has confirmed to me that he is using 50/50 Whole/Part Skim mozzarella blend and so am I, but his pizza has a buttery character that mine is lacking.  Could it be that they are mixing butter with their cheese?  Any suggestions would be greatly appreciated.  Thanks in advance for your replies.

[IndyRob]

Muenster has a buttery flavor.  At least to me.  I like a 50/50 blend of Mozzarella and Muenster.

[Puzzolento]

Scamorza is very buttery-tasting.

I have found that cheap olive oil adds a surprisingly buttery taste to pizza. I mean the Berio "Sauteeing and Grilling" grade. You might add some to your cheese as an experiment.

Then again, there is always butter.

[AJ72]

Does anybody know of any operators adding butter to their cheese?  It could be that they are just using whole milk mozzarella but he told me 50/50, so there must be a secret.  Then again, why would they use a 50/50 only to add the fat back in?