McDonald’s Considers Expanding Its Build-Your-Burger Test

McDonald’s Corp.’s build-your-own-burger experiment, under way in four Southern California restaurants, could be coming to many more locations as the chain seeks to pull out of the worst sales slump in a decade.

The test, which lets customers pick out burger toppings such as jalapenos and tortilla strips on a touch screen, will be taken to additional markets depending on how the trial goes, said Lisa McComb, a spokeswoman for McDonald’s. The program started late last year at an Orange County restaurant and then expanded to three more McDonald’s in August.