Yes, you can heat up sake bottles in hot water. Also, if the item is microwave-safe, you can heat it up by microwaves as well. However, please do not heat products with gold or silver in the microwave, as sparks will fly.
How to heat up a bottle of sake
- Put the sake bottle in the pot and pour water into the pot until the bottle is half full.
- Remove the sake bottle and heat the water in the pot.
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While the water is heating, pour the sake into the bottle.
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wrap the spout of the sake bottle.
- When the water in the pot comes to a boil, turn off the heat.
- Put the sake bottle in the center of the pot to warm it up.
- Pour the warmed sake into a sake cup and drink.