Yum Yum Donuts, located in central Lynwood, has been in business for more than 14 years. In addition to the standard array of donuts found at most Los Angeles donut shops, Yum Yum also offers interesting items that reflect local tastes, such as Salvadoran quesadilla bread and Mexican sweet breads. Open 24 hours, Yum Yum is popular with those who work the night shift.