My son bought a Japanese water heater to keep a liter of water at just below boiling at all times. For my 4 pm Ceylon tea break, milk no sugar, I refuse to use the prefab water; preferring to stick with my routine of boiling the water, to a rolling boil, adding it to the tea bag in the cup, and letting it steep. One doesn’t take tea to maximize efficiency but to pause and plan, or just let go the reins on attention and see what happens.

My son loves the always ready hot water.