Hot water gets under the wax, the wax floats, you lift it off when it sets. It is the cleanest empty if you do not want to wait for a freezer. It is also how people crack jars: boiling water into fridge-cold glass, or a jar standing in a wet sink that then gets a thermal surprise.
Do it like this
- Room-temperature jar, heatproof mat, not in an empty Belfast sink.
- Hot water from the kettle after a ten-second wait is enough. You are melting soy, not sterilising kit.
- Let the wax set on top. Lift the disc. Repeat if there is still a film.
- Wash with soap. Bin the wax or keep it for firelighters. Leftovers.
Tab still in? Fish it out with pliers once it is loose. Do not pour the lot through the strainer and then run the tap on full. The U-bend does not want a soy lining.
