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Soft Katsugen is a sugar-sweetened, non-carbonated lactic acid bacteria drink sold in cartons, almost only in Hokkaido, by Megmilk Snow Brand. It belongs to the Japanese legal class of lactic acid bacteria drinks, made from milk fermented with lactic acid bacteria or yeast and then diluted; the maker states 1.0 % non-fat milk solids, so it is in the class below 3.0 %. The maker publishes no recipe, so the steps follow the national standard for that class.
Fully documentedSoft drinks35 min
Recipe
No fixed amounts recordedA factory product; the maker publishes no recipe. The label lists the ingredients but no amounts.
First items on the maker's label, with stabiliser (CMC), acidulant, flavouring and caramel colour[megsnow-product]
Total time across the recorded steps: 35 min
Start
Drag the bar or press Play
What changes:The milk base is heated to kill stray microbes
Step 1 of 4
Heat-treat the raw materials for the concentrate
Time
30 min
Set
Temperature
63 °C
Set
Salt
None given
Acidity
Not documented
Output: pasteurised milk base.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
Soft Katsugen is a sugar-sweetened, non-carbonated lactic acid bacteria drink sold in cartons, almost only in Hokkaido, by Megmilk Snow Brand. It belongs to the Japanese legal class of lactic acid bacteria drinks, made from milk fermented with lactic acid bacteria or yeast and then diluted; the maker states 1.0 % non-fat milk solids, so it is in the class below 3.0 %. The maker publishes no recipe, so the steps follow the national standard for that class. Made in 4 steps over 35 min. The longest step, heat-treat the raw materials for the concentrate, takes 30 min (乳及び乳製品の成分規格等に関する命令 (Ministerial ordinance on…) and runs at 63 °C (乳及び乳製品の成分規格等に関する命令 (Ministerial ordinance on…).
Katsugen is a diluted drink made from a fermented milk concentrate, not a fermented milk drunk as it is. At 1.0 % non-fat milk solids it is in the standard's class below 3.0 %, which must carry at least 1,000,000 live lactic acid bacteria or yeasts per mL.
The national standard requires the raw materials to be pasteurised (63 °C for 30 min or equivalent), dilution water to be boiled at least 5 min, and coliforms to be absent. The maker labels the drink for storage at 10 °C or below and a 15-day shelf life.
Hazards the sources name: Coliforms (must test negative under the national standard).
The maker traces Soft Katsugen to a drink sold as 活素 (katsumoto) in 1938, renamed カツゲン in bottles in 1956 and sold in paper cartons as ソフトカツゲン from 1979. Japanese Wikipedia adds that it was first made for the Imperial Army in central China, from Hokkaido concentrate.
Starter
The sources we found do not say how its fermentation begins.