The Bulgarian striker scored five goals in the 7-1 defeat of Blackburn on Saturday.
“I can’t believe it. I scored five in a game but it happened,” Berbatov said.
“I have scored that many before but it was a long time ago back home in Bulgaria.
“Today I did it in the Premier League. To stand next to people like Cole and Shearer is a great honour.”
“The first goal was the most important,” he added. “It gives you the confidence to play.
“As a striker, people do tend only to look at the goals you score.
“I am more concerned with how I play but today was all about goals for me.”