A blender assembly including a blender vessel and a blender hub. The blender hub having a plurality of first guide elements. The blender vessel having a rim, the blender vessel further having a plurality of second guide elements that each cooperate with a respective one of the first guide elements for forming a coupled and a sealed engagement to the blender hub. By releasing the coupling, the first and second guide elements cooperate to provide a two-stage release. A first stage of the release breaking the sealed engagement, and maintaining a loose coupled engagement, between the blender hub and the bender vessel. A second stage of the release, subsequent to the first stage of the release, releasing the coupled engagement between the blender hub and the blender vessel.