Where Does It Start?

What is so tasty on a weekend breakfast?
Goes amazingly well with cream cheese and lox,
Has been used in stories, the arts, very traditional,
Can be white, rye, multigrain, very nutritional,
It was brought in from East Europe to America,
To New York (later of course moved to Florida),
The funny thing about this story my dear friend,
That like the Bagel there is no beginning and no end,