“There’s an epidemic going around and we’re here making so…so is it the Nara Era?“
Now that Japanese primary and secondary schools throughout the country are temporarily closed due to the spread of the coronavirus, rumors have become rampant that there’s an excess of milk in the country and dairy farmers are on the verge of losing their businesses. Whether that’s true or not, many people have been trying to help by pitching in to buy more milk than usual. One way to use up vast quantities of milk is by turning it into a dairy product called so (蘇) that was consumed in Japan in ancient times. Consequently, social media accounts in Japan have been abuzz as people document their attempts to reproduce a recipe that’s now in vogue for the first time in 1,000 years.
▼ “I made so! It took about five hours.”
蘇作ってみた〜!!
— よねざわさかな (@E310316) March 8, 2020
5時間ぐらいかかったww pic.twitter.com/1NGtfsA8xU
The origins of so are masked in mystery but it is estimated to have been consumed by the nobility in Japan throughout the Asuka Era (circa 538-710 CE), Nara Era (710-794 CE), and Heian Era (794-1185 CE), a span of time which witnessed everything from the introduction of Buddhism to Japan to the moving of the country’s then-capital to Kyoto. No one quite knows the exact recipe anymore but a basic outline was referenced in the Engishiki, a book completed in 927 that contains a set of governmental regulations and customs:
“Boil down 1 to (an ancient unit of measurement; around 18 liters/4.76 gallons) of milk to get 1 sho (an ancient unit of measurement; around 1.8 liters/0.48 gallons) of so.”
With such limited instructions to go by–basically just heat milk and wait a number of hours before it starts to take solid form–many net users began experimenting with their own variations while cooking such as adding seasonings, simmering in a pan over different levels of heat, stirring in a mix of sugar and salt, and pairing the finished product with honey or black pepper before eating.
▼ “So and more so. The heating conditions between the two were a little bit different. You can tell by the difference in color.”
「蘇」と「蘇」です。
— 平松 サリー(料理研究家・ライター) (@sarisally1) March 8, 2020
加熱条件が少し違います。色の違いがお分かりいただけるだろうか。 pic.twitter.com/HwNtdqWyIc
▼ “From the right are regular so, milk tea so, and café au lait so.”
https://twitter.com/myk_589/status/1236653178843619328It also appears to be quite fluffy when cut:
https://twitter.com/mi_kaor/status/1236691790813466624Finished so is said to taste something like cheese, candy maker Fujiya’s Milky candy, or a slightly less sweet milk cake, but still noticeably different from western dairy products such as yogurt.
Japanese net users reacted to the culinary trend for the most part with intrigue but a few cracked skeptical jokes as well:
“I never imagined that the next big thing after bubble tea would be so…”
“It takes so long to make so. That must be why it was originally a food for nobles.”
“I can’t decide whether the people propagating this so boom are refining our culture to the next level or are just a bunch of idiots.”
“I tasted it at a restaurant in Kyoto once. It had a simple caramel-like flavor.”
“How about using up milk by taking a milk bath instead? You could easily get rid of about three liters that way.”
“蘇が蘇る–So is revived.” [Note: This is a fun bit of linguistic play. The kanji for so (蘇) is the same one used in the root of the verb yomigaeru (蘇る/to be revived).]
If you find yourself with an excess of milk no matter where you are in the world, why not give making so a try? So will we.
Source: J-Cast News via Hachima Kiko
Featured image: Twitter/@sarisally1
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!

How to make so, Japan’s 1,000-year-old dessert recipe that’s back in fashion【SoraKitchen】
Hotel offers guests the chance to experience the 1,000-year-old lifestyle of the Heian Period
Japanese vending machine serves up unique drinks at four Tokyo train stations
Visiting Japan’s Gyarados Pokémon park in the city with a special connection to Magikarp【Photos】
Majority of Japanese women in survey regret marrying their husband, but that’s only half the story
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Cosmetic wizardry: Asian women removing makeup to reveal their true selves goes viral【Video】
Experience the “Color of Water” from a 250-year-old Japanese confection maker!
The Yellow Lucky Bag from Village Vanguard is so bad it may damage Japan-US relations
WARNING! The Civic hatchback can’t drive through Evangelion AT fields, Honda’s lawyers say【Vids】
Which Japanese beef bowl chain’s near-identical demon grater onioroshi ponzu gyudon is the best?
I had no idea you could win crane game prizes in Japan the way my friend won this Dragon Quest Slime
Starbucks Japan releases new Frappuccino and latte for Valentine’s Day
Our 52-year-old pole dancing reporter shares his tips for achieving your New Year’s exercise goal
Totoro cream puffs and Catbus cookies are finally available in downtown Tokyo
Massive manga collaboration bringing 100 years of Shueisha manga to Uniqlo T-shirts【Photos】
Giant hotel rooms in Osaka reflect the new non-niche face of travel in Japan.
Japanese women showing rebounding interest in giving Valentine’s Day chocolate【Survey】
Japan’s kid-friendly ski program is now selling Pikachu snowboards for a limited time only
Ramen restaurant’s English menu prices are nearly double its Japanese ones, denies discriminating
10 times to avoid traveling in Japan in 2026
Starbucks Japan ready to get Year of the Horse started with adorable drinkware and plushies【Pics】
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
Leave a Reply