A nursing cup is provided with a cup-shaped base and a removable cap that define an open cavity between the two structures. An opening is formed through the cap to permit the passage of a nipple therethrough. Indicia is associated with the base and cap that may be selectively manipulated in a manner that indicates whether the container was used with a right breast or a left breast. One embodiment provides an external reservoir for the collection of breast milk. Another embodiment positions the opening in the cap between the peripheral edge and center portions of the cap in order to maximize volume within the device.