Does Doburoku Make You Gain Weight? A Brewery's Thorough Nutritional Analysis [Comparison with Shochu and Sake]

"Doburoku is white and thick, and seems fattening..." Many people have this impression.

Doburoku, with its rich flavor from unrefined sake made by fermenting rice and rice koji, is often avoided because its appearance and sweetness suggest it's "high in calories."

As a craft sake brewer who works with doburoku every day, I can tell you that this perception of "doburoku = fattening" is, in most cases, nothing more than a misconception.

This article will verify whether doburoku is truly a fattening alcoholic beverage by comparing it with shochu and sake, based on the Ministry of Education, Culture, Sports, Science and Technology's "Standard Tables of Food Composition in Japan (8th Revised Edition, Supplement 2023)" and public documents from the National Tax Agency.

Source: Ministry of Education, Culture, Sports, Science and Technology, "Standard Tables of Food Composition in Japan (8th Revised Edition, Supplement 2023)," Food Composition Database

 

3 Reasons Doburoku Appears "Fattening"

First, let's clarify why doburoku gives the preconceived impression of being "fattening."

Reason 1: White and thick appearance

Doburoku is an alcoholic beverage consumed without filtering the moromi (sake mash).

Under the Liquor Tax Act defined by the National Tax Agency, it is classified as "other brewed alcoholic beverages" as an "unfiltered product fermented from rice, rice koji, and water" (if filtered, it becomes seishu = sake).

This unfiltered, cloudy texture, with residual rice particles, visually gives the impression of being "packed with calories" and "heavy."

Reason 2: Subtle sweetness

During fermentation, doburoku's rice starch breaks down into sugar, and since some sugar remains before yeast converts it into alcohol, it has a subtle sweetness.

This sweetness often leads to the impression of "lots of sugar = high calories."

Reason 3: Image of carbohydrates = fattening

Since the main ingredient is rice, it's often perceived as a "carbohydrate lump." With the spread of low-carb diets, the preconception that "rice-based alcohol is fattening" has become entrenched.

However, these impressions differ significantly from the actual nutritional content.

 

【Verified with Official Data】Calories and Carbs in Doburoku

Now to the main topic. While there isn't a separate entry for "doburoku" in the Ministry of Education, Culture, Sports, Science and Technology's Food Composition Database, "seishu (sake) / junmai-shu" (food code 16002), which has nearly identical ingredients and production methods, serves as the closest reference value.

Since doburoku is unfiltered, it contains slightly more solid components derived from rice, so it's reasonable to assume its values are slightly higher than those of junmai-shu.

Nutritional Composition of Junmai-shu (per 100g edible portion)

Source: Ministry of Education, Culture, Sports, Science and Technology, "Standard Tables of Food Composition in Japan (8th Revised Edition, Supplement 2023)," Food Code 16002

At approximately 100 kcal per 100g, and only 3.6g of carbohydrates, it's clear that doburoku is much lower than white rice (156 kcal, 37.1g carbohydrates) when comparing the same 100g.

The impression that doburoku is "high in carbohydrates" is largely debunked by the actual numbers.

 

Is it true that doburoku has fewer calories than shochu?

Here, the comparison with distilled spirits becomes interesting.

It's generally said that "shochu is a low-calorie distilled spirit, so it's good for dieting," but is that true?

 

Calories in Shochu (per 100g edible portion)

According to the Ministry of Education, Culture, Sports, Science and Technology's Food Composition Database, the values are as follows:

Source: Ministry of Education, Culture, Sports, Science and Technology, "Standard Tables of Food Composition in Japan (8th Revised Edition, Supplement 2023)," Food Codes 16015, 16016, 16002

It turns out that doburoku (when converted to junmai-shu) has fewer calories per 100g (approx. 100ml) than shochu.

This is because shochu has a higher alcohol content, and alcohol itself has an energy value of 7 kcal per gram.

However, there is an important caveat here.

Shochu is usually diluted with water, hot water, or soda, so the actual calorie intake per glass tends to be lower, whereas doburoku is generally consumed straight.

Therefore, while doburoku is lower in calories if you drink the same 100ml, the accurate conclusion is that there is not a significant difference if you consume the same amount of pure alcohol.

 

Is "carbohydrates are fattening" true?

While doburoku is often associated with the idea that "carbohydrates are fattening," its sugar content of 3.6g per 100g is actually quite modest.

For reference, let's compare it with soft drinks.

• Cola (fruit-colored beverage): approx. 11g sugar per 100ml
• Orange juice (100% fruit juice): approx. 10g sugar per 100ml
• Doburoku (converted to junmai-shu): approx. 3.6g sugar per 100ml

The sugar content in one glass of doburoku is far less than in one glass of juice.

Of course, as an alcoholic beverage, it does contain calories from alcohol, but saying "it's fattening because it's high in carbohydrates" is not accurate based on the data.

 

The Real Reason for Weight Gain is "What You Eat With It"

Nevertheless, the phenomenon of "gaining weight when drinking alcohol" certainly exists. It should be considered that the majority of the cause lies not in the alcohol itself, but in the snacks consumed with it.

Alcohol has an appetite-stimulating effect, and since the liver prioritizes alcohol metabolism, fats and carbohydrates consumed alongside it tend to accumulate in the body more easily.

Dishes that pair well with doburoku include the following:

• Salted fish guts (shiokara), cheese, and other fermented foods: Excellent flavor compatibility, but be mindful of salt and fat content.
• Fried chicken (karaage), tempura: Typical high-calorie, high-fat foods.
• Finishing ramen or onigiri: Additional carbohydrate intake.

In other words, in most cases, it's not "I gained weight because I drank doburoku," but "I gained weight because I ate high-calorie snacks with doburoku."

 

3 Tips for Enjoying Doburoku as a Craft Brew

Finally, as a sake brewery, we'd like to share our recommended ways to enjoy doburoku.

1. Drink in moderation

The Ministry of Health, Labour and Welfare's "Healthy Japan 21" suggests a moderate daily alcohol intake of about 20g of pure alcohol.

For doburoku with an alcohol content of 14%, this means approximately 180ml (about one go). Adhering to this limit will keep your calorie intake around 180 kcal.

2. Focus on vegetable and protein-based snacks

Choosing low-calorie, high-protein snacks such as sashimi, hiyayakko (cold tofu), edamame, or vinegared dishes instead of fried foods or carbohydrate-rich foods will help reduce your total calorie intake.

The umami from rice and fermented foods pair very well, making them excellent choices in terms of flavor too.

3. The "savor and drink" style unique to craft doburoku

As a craft brewed sake, doburoku varies greatly in flavor from one brewery and brand to another.

By slowly savoring its aroma, acidity, sweetness, and the texture of the rice grains, you can achieve satisfaction without over-drinking.

Enjoying small amounts chilled in a wine glass is also a growing trend.

 

Summary: Doburoku is not a "fattening alcoholic beverage"

To summarize the findings of this article:

• Doburoku (converted to junmai-shu) contains approximately 102 kcal per 100g and 3.6g of carbohydrates, which is not high.
• Its calorie content per 100g is lower than shochu (Type A 206kcal, Type B 146kcal).
• The idea that "it's fattening because it's high in carbohydrates" is a misunderstanding, numerically speaking.
• The real reason for weight gain is often not doburoku itself, but what is eaten with it.

As a craft brewed sake, doburoku is a natural, deeply flavorful alcoholic beverage made only from rice and rice koji. As a brewery, we can confidently say that if consumed in moderation and with attention to snacks, it's a drink that can be thoroughly enjoyed even while dieting.

Please rediscover the appeal of doburoku based on data, not preconceptions.

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References

• Ministry of Health, Labour and Welfare "Healthy Japan 21 (Alcohol)"
  https://www.mhlw.go.jp/www1/topics/kenko21_11/b5.html
• National Tax Agency "Classification and Definition of Alcoholic Beverages under the Liquor Tax Act"
  https://www.nta.go.jp/taxes/sake/qa/01/01.pdf