Did you know that the home of the grandma slice is on Long Island? At Umberto’s, owner Umberto Corteo has been making pizza for over 60 years and continues to love making pies today. Watch the full video at the link in our bio. - - #longisland #longislandny #liny #longislandnewyork #suffolkcountyny #nassaucountyny #pizza #pizzeria #umbertos #grandma #grandmaslice #pizzachef #linkinbio