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- YONEYA factory
YONEYA factory
sweets workshop 
Second factory
The most important section in our company is the manufacturing department. Quality comes first.
We strive to provide traditional flavors safely. Traditional techniques cultivated over a long history and the latest automated technology. The flavor and spirit of our YONEYA are created in this place where these two technologies meet.
Information about YONEYA's Second Factory
An information center has been set up at the YONEYA Second Factory, where visitors can learn about yokan and Japanese sweets through videos and explanations. Souvenirs are also available.
[Factory tours are currently suspended.]
In order to prevent the spread of COVID-19, we will be suspending factory tours for the time being.
We will provide further information regarding future tours as soon as we have an idea of when they will be able to resume.
We apologize for any inconvenience this may cause, and appreciate your understanding.
History of technological innovation in factories
Head office factory (at the time)
36
Automation of Yokan Production
By developing aluminum foil paper box packaging, we have established a system for consistently producing long-lasting yokan.
Second Factory (at that time)
49
Pollution-free factory
Mizuyokan mass production system
We have built a production line to mass-produce canned mizu yokan.
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26
Development of aluminum foil paper box emphasis method
Filling machine at that time In the past, yokan was poured into a boat, left to sit overnight, then cut into pieces and individually wrapped in cellophane.
In 26, we developed a method of directly filling paper boxes made of two layers of aluminum foil and paper in the shape of a bag with yokan.
The following year, they completed the first machine in Japan that could pack yokan directly into paper boxes.
This improved the shelf life of yokan, and now the method of directly filling the yokan is the mainstream way yokan is packaged. -
37
Development of "Canned Mizuyokan"
In 37, after five years of research and development, YONEYA launched its biggest technological innovation to date: canned mizu yokan.
After its release, in an effort to diversify the flavors, in addition to the candy-smooth mizu yokan, strawberry, melon and red bean paste-based mizu yokan were also released.
Filling machine at that time 
Advertisements from that time -
41
Release of "Canned Pudding"
"YONEYA Gift Set" includes an assortment of Mizuyokan and pudding In 41, we applied the technology we used to make canned mizu yokan and launched canned pudding.
"Kurimushi Yokan" vacuum packed
The Kurimushi Yokan line at the time In 41, Kurimushi Yokan, which previously had a shelf life of just two days, began to be vacuum-packed, lengthening its shelf life.
Until now, YONEYA's Kurimushi Yokan had only a short shelf life and was only available to customers living near or visiting Narita. However, it is now possible to deliver it to customers all over the country. -
45
Yonepack
In 45, we developed "Yonepack," which is said to be the origin of small-sized yokan.
The company sold the products to young people, with the slogan "mini, maxi and pantaloons, anytime, anywhere," which were the fashions of the time. One in every 100 boxes was given a real four-leaf clover as a prize. -
And now
Traditional techniques cultivated over a long history and the latest automated technology.
It is here, where these two techniques meet, that the flavor and spirit of YONEYA is created.
Until the product is made
Ingredients for Yokan
Azuki 
sugar 
cold day
Adding red beans
Cleanly washed azuki beans are automatically fed into the pot.
Azuki bean boiling pot
The beans are boiled until soft, preserving their flavor.
Bean jam making machine
The boiled beans are separated into paste and skin in a paste-making machine, and then bleached several times to produce high-quality bleached paste without any bitterness.
Agar pot
Dissolve the agar into a liquid. Agar is used to solidify the yokan.
Kneading pot
Using traditional techniques, it is carefully crafted to create a smooth, glossy yokan with great flavor.
Neri Yokan
Filling Machine
The finished yokan is automatically filled into containers one by one in a fixed amount.
X-ray
Conducting inspections of aluminum container products.
Automatic wrapping machine
This is where the final touches are made and a single piece of yokan is completed.
Mizuyokan
Cup Filling Machine
The kneaded mizu yokan is poured into cup containers in fixed quantities.
Sterilization Equipment
Pressurized heat sterilization creates a sterile state that can withstand long-term storage.
metal detector
Any metallic reactants are removed.
Packaging
Limited quantities will be boxed.
Chestnut-mushi yokan
Steaming pot
The raw bean paste, sugar, and wheat flour are mixed well and a fixed amount is poured into each boat, which is then steamed in a special pot.
Continuous Vacuum Packaging Machine
They are individually cut and vacuum packed.
Sterilizer
Here, the product is heat sterilized to improve its shelf life.
Cased
The specified quantity will be packed in boxes.
Japanese sweets
(I.e.
Daifuku is made hygienically using modern equipment.
Dorayaki
As an annual product, shipments are increasing year by year.
Peanut Monaka
It's a popular item and the production line is automated.
Baked confectionery
Baked in a fully automatic oven.
