On April 27, 2026, I visited and toured Den Sake Brewery. Run out of a small set of rooms in the corner of a former West Oakland oxygen manufacturing plant turned artisans commune[1], this was my first experience with what I would come to think of as an American jizake brewery. I was not entirely sure what to expect. After negotiating my way through the front of the milling yard, I was met by a middle-aged Japanese man in a pair of tan Carhartt overalls who introduced himself as Yoshi Sako, the owner and operator of Den Sake Brewery. I was connected with Mr. Sako by Kazuhiro Shiokawa, the president of Shiokawa Brewery in Niigata, Japan, which I toured during the month I spent in Japan back in October of 2025.

After chatting with Mr. Sako for a few minutes, I had a good idea of the type of person I was dealing with and the type of brewery I was in: a place for salt-of-the-earth folks with a passion for working with their hands to create beautiful things. There was no fancy tasting room and no curated pairings. Instead: a rice steamer that was little more than a single burner set on the ground, its steaming trays stacked about as high as my head; a wood-lined koji room no bigger than a walk-in closet, filled with expertly fitted wooden shelves. In the refrigerated back room, steel fermentation tanks stood beside a sake press — a fune — operated by a gigantic wooden lever made from a log that spanned nearly the entire room. Every repurposed inch of the place had been carefully arranged to make some fantastic sake, fusing the American materials on hand with a traditional Japanese craft.

After a brief tour of the facility, Mr. Sako pulled out some folding chairs, two bottles of sake, and some small cups, and we got down to talking and tasting sake. I tasted both a nama sake and a pasteurized sake. The sake was bolder, more fruity and acidic than many sakes I had tried in Japan. It was delicious, and I asked Mr. Sako if he thought it was strange that I wanted to pair it with something like a blue cheese burger. There was just something about the fruity acidity of the sake — particularly the nama — that I thought would be an excellent foil to the tangy, savory, smoky, and fatty flavors of a burger like that. Mr. Sako explained that he had spent years as a sommelier in Bay Area restaurants when he first came to America, and made the shift to brewing because he wanted to create something of his own and work with his hands. He told me that he makes his sake with higher acidity precisely because the American food he intends it to be paired with tends to be richer and less subtle than a lot of Japanese cuisine.

As I was tasting and learning about Mr. Sako's process, I came to realize that what I was sipping was truly a California jizake (地酒). Jizake is often translated as "local sake." Though the term was in part a marketing move in the '80s that helped to distinguish smaller local brewers from big corporate ones, my experience has been that it really describes sake that is truly "of a place." That makes sense in a way: a smaller brewer by definition will not have a big industrial process that ensures an identical, consistent product every time. Instead, that smaller brewer must take advantage of the resources he finds in his brewing environment and must deal with how those resources change over time. Moreover, because such brewers cannot produce industrial volumes of sake, they need to tailor their flavors and products to the markets that are within their reach.

Some might look at an operation like Den Sake and argue that the entire sake-making process — the method of using koji, yeast, rice, and water all fermented together and pressed with a fune to make an alcoholic beverage — is inherently Japanese. How, then, could there be a sake that is truly "of a place" outside of Japan? I think that argument misses the true richness and cultural significance of jizake. Because at the heart of sake, and especially jizake, is not the technique alone but the willingness of the brewer to adapt his process to the environment and resources at hand — and perhaps this willingness sits at the heart of every brewing tradition. Sake has been brewed across Japan for well over a thousand years, and yet Japan's geography, its climate, its water, and its agriculture vary drastically throughout the country — so outside of an industrial process, it has never been possible to brew sake the same way from location to location. The impulse to adapt may be something brewers everywhere share, but the particular tradition of adaptation that Mr. Sako carries — the koji, the fune, the centuries of Japanese brewers bending to the water of their own valleys — is unmistakably Japanese. That is the inheritance he has planted in Oakland.

This inheritance has a direct lineage. It is Shiokawa-sensei, as I mentioned, who first connected me with Mr. Sako — and as I learned during our interview, his role in Den's story runs deeper than an introduction. Mr. Sako told me he learned much of his craft from Shiokawa-sensei, who helped him set up his brewery during a trip to San Francisco. According to Mr. Sako, Shiokawa-sensei has brewed sake in some seven different countries — a testament, if ever there was one, to how far this willingness to adapt can travel.

Mr. Sako sources his single-origin rice from Sacramento. Rather than being planted in paddies, whole fields are seeded via airplane. Mr. Sako uses Oakland municipal tap water to brew his sake, and because the hardness of municipal water varies, he has learned to adjust his brewing timeline based on how much hard-water scaling he finds at the bottom of his steaming pan. The more minerals, the quicker the fermentation. Even the equipment Mr. Sako uses is custom-built for his shop; he told me that importing equipment from Japan would have been too expensive. The disposition to adapt a traditional brewing process to environmental realities may have its roots in Japan, but given those adaptations and the materials actually used, there is no question in my mind that Den Sake is of California — that it is a Californian jizake. By this same logic, a celebrated Japanese sake brewed with rice trucked in from another region is arguably less of its place than a sake made from rice grown 80 miles away with water from the municipal tap.

Much of what makes Den authentically Californian jizake — sourcing locally, building his own gear, adapting to municipal water — Mr. Sako does partly by necessity, under constraints that would have stopped most people. These constraints don't end with rice and water and equipment, because there are regulatory, compliance, and business obligations that are an omnipresent overlay to the mechanics of operating a brewery in America.

In America, sake breweries have compliance obligations to all three levels of government. To go into production, sake breweries like Den must first obtain approvals for their planned operations from their city or county government. Then they must obtain a permit from the federal government's Alcohol and Tobacco Tax and Trade Bureau (TTB). Once that permit is obtained, the brewery must submit an application to the California Department of Alcoholic Beverage Control. All of these applications are complex, invasive, time-consuming procedures, often requiring background checks, fingerprinting, and financial disclosures.

Obtaining the necessary permits to begin operating is just the start of a sake brewery's compliance burden. Every new product needs a formula approval and a label approval from the federal government[2], and there are federal tax burdens as well. This is especially tricky with sake, because the federal and state governments classify it differently — and they don't merely differ, they invert each other. Federally, the TTB treats sake as wine for labeling but as beer for production and tax; a domestic sake maker like Sako must therefore qualify as a brewery.[3] California flips the production side entirely: under the Business and Professions Code, sake is statutorily wine, not beer.[4] The result is that the very same bottle is, federally, the product of a brewery, and under California law, the product of a winegrower. In my own practice I have seen regulators themselves unsure which standard to apply. Obtaining permits and managing ongoing compliance under a regulatory environment like this can be challenging for legal professionals; it can be entirely unmanageable for someone without legal training.

Make no mistake — these layers of regulation carry real cost for businesses. Mr. Sako confessed that it took him so long to get his label approved that he refuses to update it in any way that would require a new approval. Moreover, because permits and licenses are usually issued to a specific location, a business that grows and needs a bigger space is likely looking at reapplying across all three levels of government. Indeed, Den Sake once contemplated a move to a larger San Francisco facility that proved unworkable.

At the end of the day, this regulatory environment often serves to intensify the already staggering capital requirements for a sake brewery. The very re-permitting burden described above is part of what makes growth so capital-intensive. This puts artisanal breweries like Den Sake in a tough position. On the one hand, if they want to grow beyond self-distribution — so that their product can be sold across state lines — outside capital will likely be required. On the other hand, artisanal producers, like Den, make sake because they love it and love being creative. That joy and creativity are fragile, and can easily be destroyed by investor pressure to grow and to increase returns.

In my experience, the key to addressing these issues is identifying outside capital that has reasonable expectations for its return and a clear understanding of the operator's goals for the business. Those expectations and understandings then must be built into investment documents that protect the investment while preserving the operator's creative freedom. In practical terms this often looks like governance terms that keep creative and operational control with the founder even as outside money comes in, and a small, aligned investor base or a single patient investor rather than institutional growth equity. This approach is also ideal from a regulatory perspective. Ownership interests above certain thresholds must be disclosed, and their holders investigated, as part of obtaining alcohol permits and licenses — and many investors simply can't or won't go through that process. The licensing regime itself, in other words, rewards a founder for keeping the investor base small and committed.

It means something that a person like Mr. Sako can come to this country and apply the adaptive traditions of his craft to make a beverage that is truly "of this place." I am unsure, though, that America yet has the market ecology — and in particular the education — to recognize jizake as something unique and separate from what gets imported. I want to help change that.

What strikes me, given the state of the sake market and the hurdles our regulatory system lays over it, is that a business like Den Sake needs an integrated approach to its legal services. Supporting a producer like Mr. Sako well means combining a command of the industry's legal framework with the practical realities imposed by human regulators — all in the service of a business defined by its cultural tradition and its very human ambitions. The law alone is retrievable; anyone, or anything, can look up how California classifies sake. What cannot be looked up is what it means to sit in that room — to know which of a brewer's constraints he chose and which were forced on him, and to see the dilemma forming before he has named it.

Very early in my career, I thought my life as an attorney would involve making judgments from a bench in a robe, or dispensing advice in a suit and bow tie from behind a giant wooden desk. From the perspective of a folding chair in the middle of a sake brewery in a former West Oakland oxygen manufacturing plant turned artisans commune, listening to a master craftsman, I can't help but think that perhaps the art of the brewer and the practice of the lawyer are more similar than people imagine. Both require getting dirty and into the weeds — learning the environmental, economic, and human constraints, and adapting to them to make something that lasts. Sipping my first Californian jizake from a small cup, it struck me that Mr. Sako has helped to found a tradition and an art here in California that I am sure will last for many years to come.

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