"Chinese Jews" joke

Sid and Al, both Jews, were having dinner in a Chinese restaurant.
During their conversation, Sid asked Al, "Are there any Jews in China?"
"I don't know," replied Al. "Why don't we ask our Chinese waiter?"
When the waiter came by, Al asked him, "Are there Chinese Jews?"
The waiter said, "I don't know sir, let me ask," and went into the kitchen. He returned a few minutes later and said, "No sir. No, Chinese Jews."
"Are you sure?" Al asked.
"I check again, sir," the waiter replied and went back to the kitchen.
While he was gone, Sid said to Al, "I can't believe there are no Jews in China. Our people are scattered everywhere."
At this point, the waiter returned. "Sir, no Chinese Jews," he said.
"Are you really sure, man?" Al asked again. "I can't believe there are no Chinese Jews."
Exasperated, the waiter frantically said, "Sir, I ask everyone! "We have Apple Jews, Orange Jews, Tomato Jews and Grape Jews. But no one hear of Chinese Jews!"