In the mid-1960s, Israel’s first prime minister, David Ben-Gurion, refused to allow the Beatles to perform in Israel so as not to corrupt the youth. It’s hard to imagine he would have allowed Elton John, Ozzy Osborne, Lady Gaga, Madonna or Rhianna, all of whom have recently performed in Israel. A dozen young people gathered in the spacious living room at Moishe House Decatur on Monday, Aug. 24, happy to see their friends and to fill their bellies with falafel, baba ganoush, tahini, Israeli salad, and a special drink mix of Tito’s vodka and pomegranate juice — a Tel Aviv staple introduced by the evening’s presenter, Eli Sperling.