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Umeboshi: Traditional Japanese Pickled Plums Made Right Here in the Bay Area

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Umeboshi, packed in jars for shipment. (Kim Westerman)

Ayako Iino grew up in Nagoya, Japan, the largest city in the Chūbu region. Like many kids, she watched her mom make umeboshi, a traditional salt-cured plum pickle (and alkalizing dietary staple that’s good for digestion), usually eaten simply as a condiment on steamed rice. Many Japanese families plant this common tree in their yard.

But it wasn’t until Iino moved to a small seaside village in Chiba Prefecture and had her own rice field, chickens and vegetable garden that she discovered the sources of food and her connection to the process of growing and cooking her own sustenance.

Iino essentially taught herself how to cook, and she began by making miso and pickles of various kinds, including umeboshi. She says the ume fruit is unique because “you can preserve it as sweet or sour,” and there are multiple ways to use it. Umeshu, for example, is a traditional plum liqueur made from green fruit, while umeboshi is made from ripe fruit.

Ayako Iino in her garden.
Ayako Iino in her garden. (Kim Westerman)

During the time she lived in the countryside, Iino developed a desire to study food more systematically, and she moved to San Francisco to study at City College of San Francisco. She found herself being jolted from a farm-to-table way of life to learning about cafeteria production in the American food industry, a culture shock that she embraced fully as a part of her learning.

She happened to meet a farmer in the Central Valley who grew the Japanese plums of her youth -- which aren’t very common in California -- and set about to make umeboshi the traditional way, with just sea salt and red shiso. She named her company Yumé Boshi as a lyrical pun: “Yumé” means “dream,” and one meaning of “boshi” is “star.”

Ayako Iino pulls salted plums from their cure.
Ayako Iino pulls salted plums from their cure. (Kim Westerman)

The process is straightforward, but takes several months from start to finish. After washing and drying the just-picked fruit, which, in this area, is usually harvested sometime in June, she cures the plums in small batches with sea salt. Then she drains the liquid off the fruit and dries it in the sun on racks for a couple of days. She returns the plums to the buckets she uses for curing and adds red shiso, which gives the pickle a beautiful cardinal color and a light, herbaceous-floral aroma. She allows the pickles to mature for a couple of months before being packed into jars for consumption. If stored properly, in a cool, dark place, their shelf life is up to three years.


Iino also makes the same style pickle with koume plums, a smaller, more delicate fruit than ume; umeboshi vinegar, which is a by-product of the curing process; and jams from ume and peach. Her line is available, seasonally and in limited quantity, at Berkeley Bowl (both locations), Monterey Market, Rainbow Grocery, Good Eggs online, Boulette's Larder, The Local Butcher Shop and Oxbow Produce.

She offers us this previously unpublished recipe to try at home:

Recipe: Quick Cucumber Pickle With Ginger and Umeboshi


  • 2 Japanese cucumbers
  • 1/2 oz. ginger
  • 1 umeboshi
  • 2 tsp ume vinegar
  • Sea salt


  1. Cut the cucumber lengthwise in half, then slice thinly. Peel the ginger, then mince or cut into very thin julienne.
  2. Combine the cucumber and ginger into a bowl and sprinkle small amount of salt to cover them. Toss and let sit for 30 minutes.
  3. After 30 minutes, strain off the liquid, then squeeze the mixture with your hands to eliminate as much liquid as possible.
  4. Smash the umeboshi with a fork, add it to the mixture, then add the ume vinegar and mix well.
  5. Pack in a glass jar, then refrigerate.
  6. The flavor improves after several hours. The pickles keep for five days if refrigerated.
  7. Serve with hot steamed rice.

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