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Autumn Dietary Therapy: The Wisdom of the Persimmon, Ishida Mitsunari’s Legend, and Oriental Medicine

As November arrives, the morning and evening air carries a crisp, refreshing chill.

Yesterday, a generous box of seasonal persimmons (kaki) arrived from my mother-in-law. Looking at their glossy, vibrant orange hues instantly brings a sense of deep autumn. Persimmons have long been cherished throughout Japan, often grown in home gardens because the trees thrive so easily, making them a familiar presence on dining tables across the country at this time of year.

There is a traditional Japanese saying: "When persimmons turn red, doctors turn blue"—a testament to their exceptional nutritional value. From the perspective of traditional Oriental medicine (shokuyōjō, or dietary therapy), persimmons possess both remarkable therapeutic properties and important cautions worth knowing.

Here is a look at the dietary wisdom of persimmons, alongside a famous historical tale of the samurai commander Ishida Mitsunari.

Why Ishida Mitsunari Refused a Persimmon on His Way to Execution

Among history enthusiasts, there is a widely known episode concerning Ishida Mitsunari and the persimmon.

After his defeat at the historic Battle of Sekigahara (1600), Mitsunari was being escorted through Kyoto toward the Rokujō riverbank for execution. Parched with thirst, he asked his guards for a cup of plain hot water. One guard replied, "We have no hot water, but take this persimmon instead," offering him a dried persimmon. Mitsunari shook his head and declined:

"Persimmons produce harmful phlegm; I cannot eat it."

The guard laughed in mockery: "A man whose head is about to be severed in moments worries about dietary health?" Mitsunari replied with quiet resolve:"A person who harbors great ambition treasures their life until the very last breath, striving to fulfill their purpose."

Before his death, Mitsunari composed his final farewell poem (jisei no ku):

"Though we may depart earlier or later than one another,

if our bonds endure, wait for me a moment at the crossroads of the six realms."

As reflected in Mitsunari's unwavering discipline, traditional medicine of the era recognized persimmons as having a propensity to generate excess phlegm and excessively cool the digestive system. Even in his final moments, Mitsunari sought to keep his physical state balanced and uphold his samurai dignity.

The Healing Properties of Persimmons in Oriental Medicine

While Mitsunari exercised caution against its cooling nature, the persimmon serves as a remarkable natural remedy when consumed appropriately during dry autumn days.

1. Moistening the Lungs and Soothing the Throat

In traditional Oriental medicine, fresh persimmon has sweet, astringent, and cooling properties, directly acting on the "Lung" and "Spleen/Stomach" organ networks. Autumn air tends to be very dry, easily irritating the respiratory tract. The rich juices of fresh persimmon generate vital fluids (jin'eki), moisten dry mucous membranes, and help soothe dry coughs and tickly throats.

2. Clearing Heat and Easing Hangovers

Persimmons carry natural heat-clearing (qing-re) properties. Modern nutritional science also recognizes that persimmons are packed with tannins, vitamin C, and potassium, which assist in the breakdown of alcohol and relieve feverish sluggishness the morning after drinking.

3. The Persimmon Calyx: A Herbal Remedy for Hiccups

Beyond the fruit, the persistent woody calyx (stem top) of the persimmon is utilized as an authentic herbal medicine known as Shitei (柿蒂). For centuries, formulas such as Shiteito have been prescribed to calm rebellious stomach qi and halt persistent, exhausting hiccups.

Two Tips for Enjoying Persimmons Wisely

Despite their abundant virtues, persimmons possess a strong cold (kan) nature, exactly as Mitsunari noted. Keep these two points in mind to enjoy them comfortably:

• Moderation for Sensitive Stomachs and Cold Constitutions

  Eating multiple persimmons in one sitting can chill the digestive system, leading to cramps, bloating, or diarrhea. Limiting intake to half or one whole fruit per day, chewed slowly, provides the optimal balance.

• Pairing with Warmth

  If you are prone to feeling chilly, try dusting sliced persimmon with cinnamon and baking it briefly, or enjoy it alongside a warm cup of roasted green tea (hōjicha) or ginger tea. In addition, traditional sun-dried persimmons (hoshigaki) lose much of their raw cooling property, making them much gentler on the digestive system.

Savoring Autumn’s Bounty

The produce of autumn provides our bodies with exactly what they require to adapt to changing seasons.

Moistening a dry throat while being mindful of internal warmth is a prime example of Ishoku Dōgen—the age-old concept that food and medicine share the same origin.

Savoring these fresh persimmons with gratitude is a wonderful, simple way to nourish body and mind as we transition smoothly into winter.