NOVELTY - A composting appliance (D1) comprises: (a) at least a first container capable of containing compostable materials, (b) a first moisture sensor configured to sense water content of either: (i) the compostable materials contained in the first container, or (ii) airspace contained in the first container; and (c) a hydrating dispenser configured to dispense an aqueous composition into the first container, where the first moisture sensor and hydrating dispenser are in electrical communication.    USE - As composting appliance (claimed) for composting compostable materials into compost and soil amendment.    ADVANTAGE - The heating element may be placed in between the two containers (to emit heat into the contents of the containers) to provide more efficient use of heat emitted from heating elements potentially from a manufacturing and/or energy consumption perspectives. In stackable configuration, heat may not be evenly distributed to both vessels. In the composting appliance, both containers are releasably attached to the body of the appliance. The releasable attaching feature of the container provides convenient filling of the container or more preferably dispensing of finished compost. The user is simply able to carry the container to a desired location (e.g. flower bed) and tip over the container to release the compost from the container all without soiling the user's hands.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) method (M1) of composting involving a1) containing compostable material in a first container; b1) heating the compostable materials contained in the first container; c1) sensing water content of either ia) the compostable materials contained in the first container; or iia) airspace contained in the first container; d1) hydrating the compostable material contained in the first container based on the sensed water content of either the materials contained in the first container; or the airspace contained in the first container; and e1) composting the compostable materials contained in the first container to compost; and    (2) a kit comprising the composting appliance (D1); and an aqueous composition container containing the aqueous composition, where the hydrating dispenser is fluid communication with the aqueous composition contained the aqueous composting container.