Tia Juana features fast food with a twist, all the ingredients used are fresh. Greg says “That’s one of the things people really love. We make all our own stuff. The recipes are old, original recipes. Greg says that he has learned from his mother and grandmother".Greg runs an efficient kitchen, which helps explain why customer start streaming in early for lunch. By noon Tia Juana is almost full. In addition to the Sunnyvale location, Mr. Greg Gutierrez and his two partners also own a Tia Juana in Fremont, which is large enough to host banquets.