Gunma's Rururu Beer announces new release "Kuroi Shianzaka (provisional)"
On March 25, Gunma craft brewery Rururu Beer announced a new beer, "Kuroi Shianzaka (provisional)," on Instagram. Based on the recipe for its standard "Shianzaka," it aims for a clean drinking experience despite being a dark-style beer, and the official name has not yet been finalized.
Hop BroRururu Beer in Gunma has dropped a new release announcement! It looks like they're putting out a dark-style beer called "Kuroi Shianzaka (provisional)."
MugiWait, that sounds intense! But the "(provisional)" part means it's still a working title, right?
Hop BroExactly. They announced it in an Instagram post at 7:14 p.m. on March 25, 2026, and it's a new dark-style beer based on their regular "Shianzaka."
MugiI thought dark beers were supposed to be heavy, but the article says black, but refreshing, and now I'm confused!
Hop BroThat's the neat part of the design. You keep the roasted character, but if you make the body lighter and raise the attenuation, you can push it toward a light, easy-drinking finish.
MugiWhat is that? Atte... what?! You're suddenly speaking spells! The terms are too strong!
Hop BroSorry, sorry. Basically, it means the yeast eats the sugars well, so you don't leave too much sweetness behind. That gives you a dark beer with a clean, crisp finish.
MugiOhh! And the brewery itself saying "this might be my favorite yet" makes the brewer's confidence even hotter!
Hop BroAnd the fact that someone who originally wasn't into dark styles tasted them, came to like them, and then brewed this one feels like a drinker-driven evolution, which is great.
Hop BroThe sale date and serving locations still haven't been announced, so we'll need to keep an eye on follow-up news. It feels like we're waiting on their next update, including the final name.
MugiI can't stop thinking about it already! Once the official name is decided, let's toast to it. I'm going into Kuroi Shianzaka (provisional) standby mode!
Rururu Beer introduced its new release, "Kuroi Shianzaka (provisional)," in a post at 7:14 p.m. on March 25, 2026. In the caption, it opened with "It's black now!" and revealed that this is a new dark-style beer built on the recipe for its staple beer, "Shianzaka."
The key point this time is the balance between a black appearance and a light, easy-drinking finish. The brewery itself described it as "black, but refreshing," suggesting a design that is not simply heavy. It also wrote that this might be "my favorite yet," conveying the brewer's own confidence in the beer.
Another notable point is that the product name has not yet been finalized. For now it is being introduced as "Kuroi Shianzaka (provisional)," but the post says they want to come up with a better name, making the eventual naming decision another point to watch.
An interesting bit of background is that the post says they "originally weren't very into dark styles." The flow, in which tasting dark craft beers led them to appreciate how good they could be and inspired this brew, reflects a perspective close to that of drinkers themselves. Based in Gunma, Rururu Beer is taking a standard recipe and expanding it into a new expression, which feels very much in line with the brewery's style.
At this point, the post does not specify when sales will begin or where it will be available, so it will be worth following the brewery's updates for more news.
Information may be inaccurate. Please refer to the brewery’s official channels for the latest details.
Hop BroRururu Beer in Gunma has dropped a new release announcement! It looks like they're putting out a dark-style beer called "Kuroi Shianzaka (provisional)."
MugiWait, that sounds intense! But the "(provisional)" part means it's still a working title, right?
Hop BroExactly. They announced it in an Instagram post at 7:14 p.m. on March 25, 2026, and it's a new dark-style beer based on their regular "Shianzaka."
MugiI thought dark beers were supposed to be heavy, but the article says black, but refreshing, and now I'm confused!
Hop BroThat's the neat part of the design. You keep the roasted character, but if you make the body lighter and raise the attenuation, you can push it toward a light, easy-drinking finish.
MugiWhat is that? Atte... what?! You're suddenly speaking spells! The terms are too strong!
Hop BroSorry, sorry. Basically, it means the yeast eats the sugars well, so you don't leave too much sweetness behind. That gives you a dark beer with a clean, crisp finish.
MugiOhh! And the brewery itself saying "this might be my favorite yet" makes the brewer's confidence even hotter!
Hop BroAnd the fact that someone who originally wasn't into dark styles tasted them, came to like them, and then brewed this one feels like a drinker-driven evolution, which is great.
Hop BroThe sale date and serving locations still haven't been announced, so we'll need to keep an eye on follow-up news. It feels like we're waiting on their next update, including the final name.
MugiI can't stop thinking about it already! Once the official name is decided, let's toast to it. I'm going into Kuroi Shianzaka (provisional) standby mode!
