USEFUL TOOLS: Dropped Lids (otoshi-buta)
Otoshi-buta lids drop down to sit directly on the food (not the rim of the pot). Lids come in various sizes. Chose one that is slightly smaller in diameter than the pan or pot with which it will be used.
Using otoshi-buta will enable you to cook faster and more fuel-efficiently because bubbling liquid recirculates throughout the pot as it hits the underside of the lid.
An added bonus of using otoshi-buta lids when cooking foods that produce aku ("froth" or scum) is that the unwanted scum will migrate towards the center ridge of the lid making it easier to remove than constant skimming.
To remove the aku carefully lift the lid up and out of the pot and hold it over the sink. Tilt the lid to cause the aku to
flow down into the sink. Briefly rinse under cold water to wash away
before replacing the lid in the pot. Repeat, as needed during the