Abstract: A dual chamber drinking vessel includes a cup chamber positioned adjacent to an angled chamber. The cup chamber includes a cup upper portion and a cup lower portion. The angled chamber includes an angled chamber upper portion and an angled chamber lower portion. The cup upper portion is joined to the angled chamber upper portion by a bridge. The dual chamber drinking vessel is configured to allow different liquids to be received within the cup chamber and angled chamber without mixing the liquids until the vessel is tilted to elevate the angled chamber relative to the cup chamber. The angled chamber includes an outer wall portion and an inner wall portion. The inner wall portion extends at an angle from the bridge and meets the outer wall portion at an angle configured to enhance the mixing of the second liquid with the first liquid.