Fruit can make up between 50% and 67% or more of the capuchin's diet.[7] In one study in Panama, white-headed capuchins ate 95 different fruit species.
Among its favorite fruits are figs from the family Moraceae, mangos and related fruits from the family Anacardiaceae, the bean-like fruits from the family Leguminosae and fruits from the family Rubiaceae.[47] It generally only eats ripe fruit, testing for ripeness by smelling, tasting and prodding the fruit.[7] It typically eats only the pulp and juice, spitting out the seeds and fibers.[7] Other plant matter eaten includes flowers, young leaves, seeds of certain plants, and bromeliads.[7][48] It also uses the bromelids as a water source, drinking the water that gets trapped inside.[7] In Carara National Park the capuchins have a varied diet in addition to the above of banana fruits and flowers, heliconia seeds, huevos de caballo fruits and anacardiaceae stems.[49]