Answer: CROISSANT

Possible Clues:
"Today at the bookstore I bought a ___ ..."
He leaves new chain stores with pastry
Bakery product
Bakery buy
A rich crescrent-shaped bread roll
Tasty crescent-shaped French bread roll
Petit dejeuner, one tucked away by worker in a bad mood?
1 across ordered books for 14 (part 2)
Continental breakfast crescent
French breakfast food

Last seen in:
The Guardian - Cryptic - Oct 09, 2012
The Guardian - Cryptic - Nov 25, 2011
The Guardian - Quick - Mar 26, 2009
Irish Times (Simplex) - Mar 09, 2009
Wall Street Journal - Apr 11, 2008
The Guardian - Cryptic - Dec 13, 2005
L.A. Times Magazine - Dec 11, 2005
New York Times - Apr 10, 2005
The Guardian - Quick - Dec 01, 2004
Irish Times (Simplex) - May 13, 2002