Tagmay's Thermal Container

2nd-level transmutation (ritual)

Casting Time: 1 minute
Range: Touch
Components: V, S, M (a Large or smaller closable metal container, a jar of animal blubber, and a vial of mercury)
Duration: 10 days
This spell allows the interior of the container used in the casting of this spell to change temperature indicated by the amount of mercury in the vial. The container maintains its shape, weight, and containment capacity, and its exterior remains comfortable to touch and handle.
On your turn while the spell is active, you can use the Use an Object action on your turns to fill or remove mercury from the vial, which changes the temperature of the interior of the container as shown below:
Empty. The interior of the container becomes an environment of extreme cold, and any foodstuffs or other organic materials placed within the container are protected from natural decay or spoilage, freezing after 1 minute.
Half. The interior of the container remains a comfortable temperature, no matter the temperature outside the container.
Full. The interior of the container becomes an environment of extreme heat, and any foodstuffs or other organic materials within the container begin cooking, reaching your preferred edibility after 1 minute.
At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the container gains a walking speed in feet equal to 10 times the slot’s level, and you can command it as a bonus action to take the Dash action immediately after your turn.
Class(es): Artificer, Merchant