After more than 60 years of serving up heaping plates of Mexican food in South Tucson, the venerable Guillermo's Double L restaurant has expanded to the north side.

Although the new venture is called Cinco de Mayo, it shares a menu and most of its staff with the landmark at 1830 S. Fourth Ave.

"We're bringing authentic Sonoran-style Mexican food to the north side," said Kat Gonzalez, who owns Cinco with her father, Antonio Gonzalez.

Antonio Gonzalez bought Guillermo's Double L Restaurant in 2008 from Bill Ford, whose father-in-law started the place in 1948 as a drive-in barbecue joint. It switched to Mexican food four years later.

Gonzalez has been part of South Tucson's restaurant scene since he and his brother, Roberto, bought Crossroads in 1979.

After buying Guillermo's, Gonzalez maintained the extensive menu and added dozens of Sonoran specialties with an emphasis on seafood.

Cinco de Mayo had a quiet opening on March 13 at 3535 E. Fort Lowell Road. The building most recently housed a Las Cazuelitas, but longtime Tucsonans will remember it as the home of DaVinci Italian Restaurant.

Kat Gonzalez said her father briefly opened Antonio's Restaurante there a few years ago.

Inger Sandal