FRINJ Coffee: How California Became a Specialty Coffee Origin

Specialty coffee is grown in California. Not as a novelty or a hobbyist experiment, but as a working commercial origin with farms across the coast, a Ventura-based processing facility, and lots being submitted to international auctions. FRINJ Coffee is the company that built it.

FRINJ was founded in 2017, but the real start of California-grown specialty coffee traces back to 2002, when the late Jay Ruskey planted the first commercial coffee trees at his family farm in Goleta. More than two decades later, FRINJ runs a network of roughly 20 farms stretching from San Luis Obispo down to San Diego, with a particularly strong concentration in North County. Eight of those 2025 farms were in San Diego County, and the 2026 harvest is already underway.

To get the full picture, I spoke with Derek Opperman, FRINJ's Head of Quality Control and on-staff Q Grader. Below is the conversation, alongside the history, science, and local context behind how California became one of the most unlikely specialty coffee origins in the world.

Quick Takeaways

Pioneer: First commercial coffee trees in California planted at Condor Ridge Ranch in Goleta in 2002
Founded: FRINJ Coffee established in 2017 to scale California-grown coffee into a real origin
Network: Around 20 farms across coastal California, from San Luis Obispo to San Diego
San Diego footprint: 8 of 20 farms in 2025 were in San Diego County, with more expected in 2026
Harvest window: Late May through early November, moving south to north
Signature process: Yeast-inoculated washed, plus a 2025 return to traditional washed
Notable lot: Condor Ridge Ranch Traditional Washed Geisha submitted to the 2025 Dubai Coffee Auction

How California Became a Coffee Origin

California coffee as we know it today did not exist before 2002. The story begins with Jay Ruskey, a farmer with a deep curiosity for what his family's land in Goleta could grow. Condor Ridge Ranch sits in a coastal microclimate roughly thirty minutes north of Santa Barbara, and Jay made the call to plant the first commercial coffee trees in the state. At the time, the assumption was simple. Coffee could not be grown in California. The latitude was too high, the elevations along the coast too low, and the climate too unfamiliar for a crop defined for centuries by tropical, high-altitude origins.

Jay's bet worked. By the late 2010s, what started as a single farm had become a working proof of concept, and FRINJ Coffee was formally founded in 2017 to scale the model and bring more growers into the network. Jay is no longer with the company, but his vision is still the foundation. The genetic material he acquired and planted at Condor Ridge is the same material now growing across FRINJ's farms.

FRINJ today operates as a vertically integrated coffee origin. The company works with a network of grower partners, processes cherries at a central post-harvest facility in Ventura, and sells the finished coffee through direct-to-consumer channels and to specialty roasters across the country. Derek Opperman, the Head of Quality Control, holds a Q Grader certification (the specialty coffee industry's highest sensory credential), and the program has matured to the point where FRINJ coffees now compete on the same stages as lots from Panama, Ethiopia, and Colombia.

Q&A with Derek Opperman, Head of Quality Control

I sat down with Derek Opperman, FRINJ's Head of Quality Control and on-staff Q Grader, for a wide-ranging conversation originally published as a Reddit Q&A for the r/SanDiegoCoffeeBeans community. The conversation is below.

Most people assume coffee cannot really be grown in California. What did FRINJ learn that proved that assumption wrong? Also, how have your expectations changed over the years as you have perfected the craft of growing California coffee?

The thing we learned that proved the assumption wrong is that you can use high latitude and coastal microclimates to replace high altitude. All of our coffee is grown between 60 and 300 MASL because low elevations at our latitude produce environmental conditions similar to high-elevation farms in the tropics. High-quality coffee requires a mild climate that doesn't get too hot and doesn't get too cold. It also requires a specific day-to-night temperature fluctuation that slows cherry maturation and builds complexity. In the tropics, you get that by climbing in elevation, since lowlands are too hot and cause fast ripening. We get the same effect at sea level because we're at a much higher latitude. Our coastal Southern California climate produces diurnal temperature fluctuations similar to 1800 MASL in the tropics, and our cherries take around 10 months to mature, comparable to farms at altitude in Panama. We don't grow at altitude in California because the high elevations here would be too cold, and coffee doesn't like to freeze. As for how our expectations have changed: we are continually surprised by the quality. Early on, the goal was just to prove you could grow drinkable coffee here. Then it became about whether we could grow genuinely good coffee. Now we're producing coffees in conversation with the best origins in the world, and I don't think we've found the upper limit yet. We're still in the early chapters of understanding California as a coffee origin. Every harvest teaches us something new about what this region is capable of.

For San Diego readers specifically: what makes North County a viable place to grow coffee? How many different San Diego farms are currently being used?

North County benefits from the same factors as the rest of coastal Southern California: a mild climate driven by ocean influence, with warm but not hot days and cool but not freezing nights. What sets it apart is that it still has a rich agricultural history and real working farmland available. Much of coastal Southern California has been repurposed for development, so the places where we can actually expand are limited. North County is one of them. Eight of our roughly 20 farms in the 2025 harvest were in San Diego County, and we expect that number to grow in 2026.

How are you able to get complex flavors out of coffee that is grown at such a low altitude? Is there a particular processing method that helps with this?

We grow at low elevations because we're at a high latitude. The combination, plus our coastal influence, creates environmental conditions similar to high-elevation farms in the tropics. That gives us an extended cherry maturation period, which is where the complexity comes from. There isn't a specific processing method we use to compensate for elevation. Our farms produce excellent cherries on their own. That said, being a new origin (California coffee was only established in 2002) has shaped how we process. The most characteristic California method, though it's becoming more common elsewhere, is our "yeast washed" or "yeast-inoculated washed" process. It's a variation on the standard washed process with an initial yeast-inoculation stage. We started doing this because our farms and mill, as a young origin, simply lacked the beneficial coffee microbiome that established origins have built up over generations. The result was semi-washed coffees that never fully released their pectin. Commercial coffee yeasts solved that problem. 2025 was a milestone: we were finally able to reintroduce the traditional washed process, producing our Condor Ridge Ranch Traditional Washed Geisha, which we submitted to the Dubai Coffee Auction. That matters because it suggests our farms have matured enough to support the kind of native fermentation that defines coffee at the world's best origins. There are real but subtle flavor differences between the two processes, and we're glad to be in a position to offer both.

Given how new California coffee is as an origin, are you running any side-by-side trials with the same genetics across different regions or microclimates to study terroir? What have you learned so far about how places like San Diego versus Santa Barbara show up in the cup?

The genetic material across our farms is largely the same. It traces back to the seeds that we have acquired over the years, and that Jay planted at Condor back in the day. When we cup coffees from different sites side by side, we're getting a relatively clean look at how process, environment, and farm management affect the cup. For each day lot we track variety, processing method, fermentation time, dry time, and cup score. Larger farms go block by block, smaller ones do not. Over time, that data has helped us dial in on the post-harvest side. On the terroir question specifically: it's still early days. With genetically similar material across sites, what we're seeing is that quality differences track more closely to farm-level management (irrigation, fertilization, soil care, pruning) and microclimate than to broad regional identity. We have excellent farms in San Diego and excellent farms in Santa Barbara. There's no clean throughline yet that lets us say "Santa Barbara tastes like this" or "San Diego tastes like that," and that is a function of the genetic similarity. The one generalization I'd make is that proximity to the ocean tends to be a positive factor, though too much wind exposure becomes a problem. But even that is complicated, because we have growers doing excellent work further inland, such as at Silent Springs in Moorpark. Honestly, we're still gathering the data. Ask me again in another five or ten harvests and I'll probably have a much better answer.

What has Mraz Family Farms contributed to the California coffee story, and what makes their Oceanside-grown Geisha special?

Mraz Family Farms has been an important part of the California coffee story so far. Jason's early advocacy for California coffee has brought a lot of new people into our world who might never have encountered us otherwise. The farm is certified organic and they also grow a range of other exotic fruits, which speaks to the kind of agricultural curiosity and skill that translates well to coffee farming. Their Geisha has produced some of our most memorable lots over the years. The coffees have a very high sweetness, which is something that you can taste in the cherries themselves.

What are the biggest farming challenges in San Diego County: water, heat, cold snaps, labor, pests, processing, or something else?

All of those things except pests, really. Knock on wood, but we do not currently have to deal with rust and coffee borer beetle.

FRINJ coffee is still priced well above what most consumers are used to, often in smaller bag sizes. As production scales and the industry matures, do you see a future where your coffee becomes more accessible both in price and in larger formats (200g+ or beyond)? What needs to happen to get there?

We actually do offer a larger format: our dark roast comes in a 340g bag at a lower (for us) price point. It pulls a great traditional espresso. Growing coffee in coastal Southern California means paying California prices for land, labor, and water. The truth is that California-grown coffee will probably never be as affordable as conventional origins without some fundamental shift in the economics of California agriculture. Long term, I think coffee prices in general are going to rise. Domestic drinkers are increasingly following international cues and paying higher prices for rare, exceptional coffees. And beyond that, as the true cost of coffee production becomes more widely understood (the labor at origin, the climate pressure on growing regions, the real economics), I think people will become more receptive to paying what coffee actually costs to produce well.

What This Means for the San Diego Coffee Scene

California-grown coffee is no longer an experiment or a curiosity. It is a real origin, with real farms, a real harvest calendar, and lots that compete with the best coffees in the world. The fact that a meaningful share of those farms sit in San Diego County is something the local specialty community should pay attention to. There is a chance to be close, both physically and editorially, to one of the most distinctive new origins in coffee. Producers, roasters, and drinkers all benefit when an origin is in their own backyard.

If you want to taste FRINJ for yourself, the most reliable path is to order direct from frinjcoffee.com and watch the seasonal releases. Limited lots also surface at specialty cafes around San Diego throughout the year, often as guest pours or single-origin features. As the network grows and the 2026 harvest comes in, expect to see more California coffee on bars and bag walls around the city.

For more on the roasters and cafes shaping the local scene, browse the San Diego coffee map or follow new releases through Roaster Stories and the blog.

FAQ: California-Grown Coffee

Is coffee really grown in California?

Yes. Commercial coffee farming in California began in 2002 at Condor Ridge Ranch in Goleta, and FRINJ Coffee has since built a network of roughly 20 farms stretching from San Luis Obispo down to San Diego County. The coffee is grown at low elevations (60 to 300 meters above sea level) but at a high enough latitude that the coastal climate produces conditions similar to high-altitude tropical farms.

Where can I buy FRINJ Coffee in San Diego?

The most reliable way to buy FRINJ Coffee is direct from frinjcoffee.com. Limited lots also appear seasonally at specialty cafes around San Diego, often as guest pours or single-origin features. Following @frinjcoffee on Instagram is the best way to catch new releases as they happen.

What is yeast-washed coffee processing?

Yeast-washed (or yeast-inoculated washed) processing is a variation on the standard washed process where a commercial coffee yeast is added during fermentation to help fully break down the pectin and mucilage layer on the bean. FRINJ developed this approach because its farms, as a young origin, lacked the established microbiome that more mature coffee regions have built up over generations. The result is a cleaner, more fully fermented washed coffee, and it has become one of the signatures of California-grown specialty coffee.