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Mission olive: United States's table and oil variety

America's historic variety: carried by the Spanish missions, it built California's black table olive industry.

26 August 2026 Zeytin.NET editorial desk Olive 3 min read 68 views

The beginning of olive growing in the Americas is tied to one variety: Mission. It takes its name from the Spanish missions — carried to California by way of Mexico in the 18th century.

The California black olive

Mission became the basis of an American industry: the California-style black olive. That method differs from Mediterranean natural brining:

Mission olive: United States's table and oil variety

The fruit is picked at green maturity.
It is aerated while held in an alkaline solution, and darkens by oxidation.
The colour is fixed with ferrous gluconate (E579).
Then it is canned.

So the smooth, matte-black, soft olive in the can is not naturally black — it was picked green and darkened. For the comparison with natural brining: how olives are cured.

Why Mission?

The variety itself is not remarkable; it was chosen for hardiness. Mission adapts to cold, drought and varied soils better than Mediterranean cultivars — the first thing you want in a plant taken to a new continent.

Today it is also pressed for oil in California, giving a moderate, balanced oil.

Compared with Türkiye

Mission's story is the mirror image of Gemlik's: each established a region's black table olive identity. The difference is method — Gemlik darkens on its own in natural brine, Mission is darkened chemically.

The taste difference follows from that: natural brining preserves the fruit's own aroma, while the California style yields a product that is uniform but neutral. On judging what you have bought: has the olive gone off?

Mission in numbers

Mission — California measurements
Fruit weight	~4.1 g
Oil content	21.8%
Flesh-to-pit ratio	6.5:1 — the lowest of any commercial cultivar in California
Cold resistance	The greatest of any commercial cultivar in California
Table harvest	Late October - November
Oil harvest	Mid-December - February
Origin	Late 18th century, California — Spanish missions along El Camino Real

California commercial cultivar measurements. Mission is the only American variety listed in the International Olive Council's World Catalogue of Olive Varieties.

The table turns the sentence above — that the variety itself is nothing exceptional — into figures. A flesh-to-pit ratio of 6.5:1 makes it the least suited to table use among California's commercial cultivars; on the same measure Hojiblanca stands at 8:1.

The California black olive industry was built on it all the same, and the reason is in the table: its cold resistance exceeds that of every other commercial cultivar in the state. On a new continent survival comes first and quality second.

On the oil side the figure is far from poor: 21.8%, the same territory as Coratina's 20-23%. That is why California increasingly steers Mission towards oil.

Where it stands among measured varieties

Flesh ratio 86.7% 46 measured · rank 13.

Zoncuk avg 83,8% Mavi

et/çekirdek oranı 6,5'ten türetildi — kaynak: Kaliforniya ticari çeşitleri arasında en düşük (IOC Tablo 4

Oil content 21.8% 39 measured · rank 19.

Tavsanyuregi avg 22,6% Kalem Bezi

çeşit sayfası

Fruit weight ~4.1 g 29 measured · rank 15.

Koroneiki avg 4,2 g Karamursel Su

çeşit sayfası

Flesh-to-stone ratio 7.26 17 measured · rank 4.

Arbequina avg 6,1 Hojiblanca

IOC Dünya Kataloğu — Avustralya denemesi 1998-2004 — bu çeşidin ölçüm takımı bu çalışmadan (2 kaynak arasından)

Values are those published on each variety's own page; the comparison covers only varieties with a measured figure, so it is a comparison of what is known — not of every Turkish variety. See the full ranking and how it is built →

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