What was the burger restaurant Wimpy 's rebranded as in 1989-1990 ?
The MOS Rice Burgers currently include the ' kaisen kakiage rice burger ' ( ' fresh seafood shrimp fritter rice burger ' ) , the ' kinpira rice burger ' ( ' fried burdock and carrot rice burger ' ) , and the ' buta shōga yaki rice burger ' ( ' grilled pork and ginger rice burger ' ) .