Quick Facts
- Species: Pacific oyster (Crassostrea gigas).
- Origin: Spencer Cove, Harstine Island, Washington.
- Farm / Company: Capital City Oyster Co.
- Cultivation Method: Farmed • 3–4 years.
- Culture Method: Suspension tray and float-tumbled system.
- Salinity: 30 ppt.
- Size: 3.0″.
- Seasonality: Year Round.
- Appearance: Teardrop-shaped or elongated shell with a rough, fluted, ridged outer surface; usually white to gray with purple or brown hues; smooth interior with a deep cup and plump, creamy or slightly translucent meat.
- Flavor Profile: Mildly sweet meats, bright flavors, crisp brininess, a clean vegetable finish, silky texture, iron undertones, and a sweet candied aftertaste.
Flavor Chart
Bright brininess, silky texture, clean vegetable finishShuckability
Float-tumbled for deep cups and a manicured shellWhen I buy it
When I want a polished Pacific oyster with clean brine, a silky texture, and a finish that feels a little more refined than standard West Coast salinity.
How I serve it
Cold, well-drained, and mostly naked. Lemon or a sharp mignonette is enough—don’t cover the finish.
What to watch for
Protect the liquor and keep meltwater off the tray. That crisp brine and candied back note flatten out fast if they get diluted.
My read
Bright Pacific brine, silky body, clean vegetable finish, and a sweet candied aftertaste. Deep-cupped and built to impress on ice.
What Are Capital Oysters?
Capital Oysters are a type of Pacific Oysters (Crassostrea gigas). They are small, have deep cups, and a flavor profile that balances sweetness with brininess and a clean finish. The farmers cultivate these oysters in the pristine waters of Spencer Cove, Harstine Island, Washington, using a suspension tray and float-tumbled system that is similar to the one used for Shigoku oysters. This method involves suspending trays with floats on long horizontal lines in the middle of the water column, allowing the oysters to be naturally tumbled by the tidal movements. This process gives Capital Oysters a consistently shaped and manicured shell. It enhances their shelf life by teaching them to clamp tightly shut during daily exposure to air and submersion cycles. The oysters’ suspended cultivation in nutrient-rich waters contributes to their clean, crisp ocean flavor.
Oysters are a nutritional powerhouse, offering a range of health benefits. They are a high source of protein, low in calories, and rich in essential nutrients like zinc, vitamin B12, omega-3 fatty acids, iron, magnesium, potassium, and selenium. These nutrients contribute to various bodily functions, including immunity, wound healing, brain function, and heart health. Oysters’ nutritional profile supports physical health and has implications for sexual health, given their high zinc and iron content.
Capital Oysters, with their unique cultivation method and flavor profile, are a testament to the innovation and tradition of oyster farming in the Pacific Northwest. They offer a refined taste experience that reflects the natural environment from which they come.
How Did Capital Oysters Get Thier Name?
Capital Oysters get their name from Capital City Oyster Company, the farm that produces them in Washington State. The name “Capital” is a direct reference to the company’s identity and its connection to the state capital region near Olympia.
These oysters are grown in the cold, nutrient-rich waters of South Puget Sound, where the farm focuses on producing clean, high-quality Pacific oysters with strong presentation and consistent flavor. By branding the oysters as “Capital,” the farm ties the product to its origin and reinforces a sense of place tied to Washington’s capital area.
Over time, the name Capital Oysters has come to represent not just the farm itself, but a style of oyster that is polished, well-formed, and built for premium raw-bar presentation.
About Capital City Oyster Co.
Tom Bloomfield, a 5th-generation oysterman, who has dedicated his life to building upon the knowledge passed down from his ancestors. His family has a long history in the shellfish industry. With deep roots in the area, as evidenced by his great-great aunt Cora Chase’s book “The Oyster Was Our World: Life On Oyster Bay,”; which details the farming of Olympia oysters by his family from 1898 to 1914.
Bloomfield has a diverse background, having studied marine biology with an emphasis on fisheries. Working in various industries before returning to his roots in shellfish farming. For over a decade, he has worked with Chelsea farms. He is instrumental in the success of the shellfish industry in the region.
In partnership with Seattle Shellfish and Alaska Ice Seafoods, Bloomfield helped form Capital City Oyster Company. They produce premium oysters and become a significant player in the Pacific Northwest’s oyster market. His expertise was crucial in designing unique hatching, vibrio control methods, and a tide-tumbling process, resulting in smooth and deep-shell oysters. The suspension system he designed keeps the oysters in the middle of the water column. This ensures they are well-fed and not sitting in silt or mud.
Bloomfield’s approach to oyster farming is not only about producing a high-quality product. He also strives to maintain the health of the ecosystem. He likens the shellfish industry to canaries in a coal mine. In essence, this indicates the importance of shellfish as a baseline for monitoring a healthy ecosystem.
Follow Them
Want to dive deeper into Capital Oysters? Check out their official website and social media channels to see how they’re farmed in Washington’s South Puget Sound, get a behind-the-scenes look at their grow-out process, and find out where you can try them fresh on the half shell.
Capital Oysters Information
Oyster: Capital
Species: Crassostrea gigas
Cultivation Method: Farmed 3-4 years.
Culture Method: The suspension tray and float tumbled system is particularly effective for producing oysters with deep cups and a consistently shaped, manicured shell. This system involves attaching trays with floats to long horizontal lines in the water column.
Seasonality: Year Round
Size: 3.0″
Salinity: 30 ppt
Appearance: teardrop-shaped or elongated shell with a rough, fluted, or ridged outer surface. The shells are usually white to gray, with some showing purple or brown hues. The shell’s interior is smooth, with a deep cup on one side and a flatter lid on the other. The meat of Capital Oysters is plump and creamy or slightly translucent, nestled within the deep cup of the shell.
Flavor Profile: Mildly sweet meats, bright flavors, a crisp brininess, and a clean vegetable finish. Additionally, they offer a silky texture, with iron undertones and a sweet candied aftertaste
If you like Capital Oysters, then check out these similar varieties!
Location
Farmers cultivate Capital Oysters in the protected waters of South Puget Sound, specifically around Spencer Cove near Harstine Island, Washington.
Environmental Factors
This region is part of a network of inlets and coves that create calm, controlled growing environments ideal for oyster aquaculture. The oysters are typically grown using suspension and floating culture methods, allowing them to remain in consistently clean, oxygen-rich water while developing deep cups and firm meats.
One of the most important environmental factors supporting oyster growth in this area is the cold, nutrient-rich Pacific water. South Puget Sound benefits from strong tidal exchange, which brings in fresh phytoplankton—the primary food source for oysters. This steady flow of nutrients allows oysters to feed continuously, promoting healthy growth, dense meat development, and a balanced flavor profile.
Another key factor is the region’s stable salinity levels, usually hovering around the high-20s to low-30s ppt. This balance between ocean water and limited freshwater input creates an optimal environment where oysters can thrive without stress. Too much freshwater can weaken oysters, while too much salinity can limit growth—but South Puget Sound sits right in that ideal middle ground.
Finally, the protected geography of coves and inlets plays a major role in oyster quality and consistency. These calmer waters reduce physical stress from waves and currents, allowing oysters to grow more uniformly and develop clean, well-formed shells. Combined with cool temperatures and excellent water quality, these conditions make South Puget Sound one of the most productive and reliable oyster-growing regions in the United States.
Suggested Beverage Pairings
- Champagne: Billecart-Salmon Brut Réserve – The crispness and delicate bubbles of Billecart-Salmon Brut Réserve complement the bright and briny flavor. This pairing emphasizes enhancing the clean finish with its refreshing acidity.
- Sauvignon Blanc: Cloudy Bay Sauvignon Blanc – Cloudy Bay Sauvignon Blanc’s zesty citrus and herbal notes will pair well. Thus highlighting its subtle vegetable finish.
- Chablis: William Fèvre Chablis – The minerality and crispness of William Fèvre Chablis align with the crisp brininess of Capital Oysters. At the same time, its subtle fruit notes provide a nice counterbalance to the oysters’ sweetness.
- Stout Beer: Guinness Draught – The creamy texture and roasted malt flavors of Guinness Draught can contrast the silky texture and sweet candied aftertaste of Capital Oysters, offering a rich complement to the oysters’ flavor profile.
- Cocktail: Classic Dry Martini with Hendrick’s Gin – A Classic Dry Martini made with Hendrick’s Gin. It’s known for its cucumber and rose infusions. It can provide a clean, botanical accompaniment to the crisp and oceanic taste of Capital Oysters.
How to Buy Capital Oysters?
- Capital Oyster – Visit the official Capital Oyster website for direct purchases from the source.
- Seafoods of the World – Offers fresh Capital Oysters with detailed flavor profiles and cooking tips.
- Seacore Seafood – Provides Capital Oysters with specific characteristics and availability, emphasizing their fresh, harvested quality.
- The Oysterhood – Allows you to buy Capital Oysters directly, among other varieties, ensuring freshness and quality.
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My real-world read
Capital Oysters hit with clean Pacific brine first, but what makes them interesting is the finish. You get that bright, crisp salinity, then it shifts into a subtle vegetable note with a silky texture and a faint candied sweetness on the back end. They feel polished and intentional—deep-cupped, manicured, and built for a premium raw-bar presentation.