Tender’s water jug is mouth-blown and hand shaped in England from lead-free glass. It is sized to hold water to be added in small amounts to whisky.
Rather than being cast or mechanically mould blown, as most glassware is today, this jug is free-blown in the manner that glass has been worked since the First Century BC. During the blowing process, the rod on which the tumbler is made leaves a ‘belly button’ or punty mark on the base. The punty mark is sometimes ground away, to leave a perfectly smooth bottom, but to show its construction story, Tender’s glass wares have the punty mark still showing. The handle is made from a gather of soft glass, attached to the body of the jug while the whole piece is still soft. The base is made especially thick to give the jug a lovely solidity and balance in the hand.
The final stage of production is to press one of Tender’s lost wax-cast solid brass jeans buttons, showing Plautus’ face, into the soft glass base. Then the bottles must be carefully placed in an annealing oven, which cools them down very slowly, over twenty-four hours, so that the glass does not crack.
The jug measures approximately 5½” (14cm) tall. Mouth-blown glass should be washed by hand, and is not suitable for microwaves, ovens, or dishwashers.