Sword Bean (Canavalia gladiata) from Gift Can

A gift can produced a vine with 3-teardrop leaflets, purple iris-like flowers, and a 12-inch green bean-like pod. Manufacturer confirmed it's a Korean sword bean.

Expert Confirmation: The plant is Sword Bean (Canavavia gladiata), a vigorous vine. The pod is edible when young. Seeds can be saved and planted. Provide support for climbing. Enjoy the unusual gift!