All about Pasteurization in Sake Making Process

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sake tasting
Try Raw Sake!

We know that Japanese like raw things, such as raw fish, raw beef, raw eggs, etc. —-As well as raw sake. So there is a kind of special sake called Namasake, which has a sharper aroma and fresher taste than normal sakes, because it is unpasteurized. However, most regular kinds of sake have been pasteurized, to kill a kind of lactic acid bacteria so that sake can be preserved longer. So today let’s take a glimpse of the PASTEURIZATION.

How Did Pasteurization Started and How You Do it?

Pasteurization is named after a French biochemist called Louis Pasteur, who invented this method in 1866. But it is said that long before 1866, brewers in Japan were deactivating enzymes and killing unwanted bacteria in a sake making process, just without realizing it.
Nowadays, pasteurization process has been much more developed, it can be done with modern facilities, more easily and more precisely. Generally, brewers do by passing the sake through a coiled metal pipe that sits in a vat of heated water and then moving it to a tank, or by simply immersing bottled sake in hot water. And pasteurization is achieved by heating the sake for about 30 minutes at about 65°C (150 °F).

Usually this process is done twice, ① once after filtration, and ② once before bottling. Sakes can be categorized differently according to how many times it’s pasteurized ——
Normal sake — both ① and ②
Namatsume — only ①
Namatyozo — only ②
Namasake — not pasteurized at all

Pasteurization Method of Sake Continues to Evolve

Recently, another a little special pasteurization is used by some sake breweries. For example, Gekkeikan has produced a new sake recently, called Densyo (hyakunenkoubosikomi). During the pasteurization of Densyo, they pass the sake through the pipe to heat it to 65°C, but right after that they cool it down to a low temperature. So the pasteurization is only done for 1 or 2 seconds, instead of 30 minutes as usual. This very short period pasteurization helps to keep more original aroma and flavors left inside the sake so that you can enjoy it more exquisitely. By the way, the yeast used for this bottle is also very special. It is a traditional yeast mostly used 100 years ago, and revived recently for a 100-year celebration. Definitely a must try sake!

 

Join Our Sake Tour in Kyoto!

With Kyoto Insider Sake Experience’s brewery tours, you can get closer to the secrets of Fushimi Kyoto and its sake brewing history, whilst enjoying learning about and tasting all the different sake varieties that can be found here.

When visiting Kyoto, you can’t miss a sake tour of Fushimi – so why not join us on a hunt for the area’s best sake, and best combination with food pairing session and find your favourite along the way?

Have a nice sake life 🙂

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Our Sake Tour Reviews

  • star rating  Kotaro was an excellent guide, taking us around Fushimi village and sharing the history, process, and intricacies of sake culture. We learned so much due to his detailed explanations. The... read more

    Lauren K
    2021-12-01
  • star rating  Wow! What an incredible time we had! If you’re interested in learning about Japanese Sake or to even taste a variety (including aged sake), then this experience is definitely for... read more

    Danielle D
    2021-12-01
  • star rating  This was a very informational experience! Our tour guide not only was knowledgeable about sake but also showed us what to look for on our own when we were shopping... read more

    Chelsea B
    2021-11-01
  • star rating  Highly recommend! This experience exceeded our expectations. We learned so much about sake and are now much better equipped to pick out the sake we like at the store (before... read more

    Rachel G
    2021-11-01
  • star rating  This is a highly enjoyable, informative, and local Kyoto experience. Kotaro was an incredible guide, having grown up in the Kyoto sake brewing district. He shares his knowledge for sake... read more

    Helen G
    2021-11-01
  • star rating  Hashimoto-san showed me around in the old traditional Sake making district Fushimi and explained me a lot about the Sake making process. I could also visit a bar where I... read more

    miclsc
    2021-04-13
  • star rating  This is a must-do experience in Kyoto. The best part of the tour is that while there is tasting, there is also so much history and knowledge you acquire along... read more

    Crystal M
    2021-04-05
  • star rating  Hashimoto-san showed me around in the old traditional Sake making district Fushimi and explained me a lot about the Sake making process. I could also visit a bar where I... read more

    M. S.
    2021-04-01
  • star rating  This is a must-do experience in Kyoto. The best part of the tour is that while there is tasting, there is also so much history and knowledge you acquire along... read more

    Crystal M
    2021-04-01
  • star rating  This is the must-do-tour in your life if you are interested in Japanese sake and culture. I am Japanese. And always I wonder about Japanese sake cuz I’ve never met... read more

    Kwbtars
    2020-07-17

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