Old Cucumbers Never Die

Old Cucumber Soup

Cucumbers are known as “yellow gourds” (黃瓜) in Chinese. They are sometime also called “baby yellow gourds” (小黃瓜). I’ve always wondered why they’re called “yellow” since cucumbers are obviously green. Even with all the different varieties, they are all still green. But a few years ago while having dinner at a relative’s home in Hong Kong, her cook served a soup made with a wrinkly yellow-brown skinned gourd with slightly green flesh that she announced was mature cucumbers. That’s when I realized why cucumbers are called “yellow gourd.” They turn into a yellowish gourd with tough dry skin when mature.

The term “old yellow gourds” (老黃瓜) explains why the green cucumber is often known as “baby yellow gourds,” differentiating the two. I was actually quite relieved, in my neurotic way, by this revelation after years of wondering if I might be somehow selectively colorblind. Moreover I recently learned a Chinese proverb that refers to an older person who pretend to look young as “a mature cucumber painting itself green” (老黄瓜涂綠漆… 裝辣). It just shows how much there is to learn about cucumbers.

Old cucumber sliced into halves

Mature cucumber, as it turns out, is regularly used for making soup in Cantonese cooking. It is classified as a yin or cooling ingredient, and being abundant in the summer, is commonly used to help cool the body and prevent heat stroke during the hot season. Other yin ingredients including tangerine peel, carrots, and beans can be added to increase the cooling and other medicinal effect. And to make the soup even more appetizing pork, chicken or other poultry meat is added to enrich the soup stock.

The other key to success for slow cooking Cantonese soup is accurate temperature control. The soup should be simmered very slowly, where the liquid is just barely bubbling, for one to two hours. The best way to maintain the perfect steady temperature is to cook the soup in a clay pot. A covered clay pot that comfortably contains all ingredients are ideal as it retains and distributes heat evenly through the soup.

The Cantonese are well known for making great soups. In fact the terms for slow cooking soup, “bao tang” (煲湯) in Mandarin or “bou tong” in Cantonese, are enduringly attached to Cantonese cuisine. A Cantonese dinner in a restaurant or at home is never complete without a pot of soup. So it is natural that mature cucumber is one of their favorite summer soups. In my recipe for mature cucumber soup I’ve chosen to use corn, carrots and tangerine peels in a pork bone stock. It is a typical combination and has a very pleasing herbal aroma. Try this summer soup to get some relief from the sweltering late August heat.

Ingredients for Old Cucumber Soup

Cut up ingredients for Old Cucumber Soup

Old Cucumber Soup in Clay Pot

  • Old Cucumber and Pork Soup (老黃瓜豬骨湯)

    • Active time: 30 minutes
    • Total time: 1 hour 30 minutes
    • 1 pound pork soup bones, cut up into 2-inch pieces
    • 12 ounces old cucumber (about half of a large old cucumber)
    • 1 ear of corn
    • 4 ounces carrot (1 medium size)
    • 1/4 ounce tangerine peel (陳皮)
    • 1 inch length of ginger, unpeeled
    • 5 quarts water, separated
    • 2 teaspoons salt
    • 1/2 teaspoon ground white pepper
    1. Cut the mature cucumber in half lengthwise and remove the seeds. Then cut into squares of about one-inch. Do not peel the cucumber.
    2. Remove the husk from the corn and cut it in cross sections of about one inch thick.
    3. Peel the carrot and cut into irregular one-inch pieces.
    4. Bruise the ginger by pressing down with the blade of a knife and crushing it.
    5. Bring two quarts of water to a boil in a medium pot and parboil the pork bones for about 15 minutes.
    6. Drain the pork bones and rinse thoroughly.
    7. Place the pork bones, mature cucumber, corn, carrot, tangerine peel and ginger in a four-quart clay pot. Add three quarts or water to the clay pot.
    8. Put the clay pot on the stovetop and bring the water to a boil.
    9. Immediately reduce the heat so the soup is just barely bubbling.
    10. Cook for one and a half hours.
    11. Turn the heat off and season the soup with the salt and ground white pepper.
    12. Serve piping hot in the clay pot.
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4 Comments

  1. Ana Chiu
    Posted August 17, 2013 at 12:08 pm | Permalink

    I’ve made this soup a few months ago! I’ve discovered 老黄瓜 since moving to Guangzhou, and I find the color is really beautiful.

  2. Posted August 22, 2013 at 1:58 am | Permalink

    Wow. Never knew you could eat those. And the soup looks really great! Thank you for sharing!

  3. Oki
    Posted March 12, 2014 at 10:32 pm | Permalink

    Am making it a second time today. Its so good. Thank you for the recipe & the information. ps did not know fresh or dried tangerine peel. Used fresh. Turned out well.

    • Posted March 22, 2014 at 1:12 pm | Permalink

      Hi Oki,

      I’m glad you enjoy the soup. Dried tangerine peel has a much more intense flavor. I would suggest that you save the peels of fresh tangerine and dry them in a cool oven of about 150 degrees F. You may have to dry them for a few hours. Enjoy!

      Kian

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