I'm using one of those desktop coffee cup "beverage warmers" to warm my diy juice and speed ageing. I place a beaker of water directly on the hot surface and then put the juice bottle directly in the water. Warms it up nicely and seems to make the juice taste better in a short amount of time. I stir it periodically (manually).
Has anyone else tried this, and can you report your success/failure or suggest other tips?