Vinegar has a long history of use around the world, both as a culinary ingredient and a traditional remedy. It was introduced to Japan from China around the 4th to 5th century, and since then, it has become a staple in Japanese cuisine—especially in the form of rice vinegar, which has a milder, slightly sweet flavor compared to many Western vinegars.

In Yakuzen, vinegar is categorized as a warm-natured food. It helps warm the internal organs, improve Qi and blood circulation, and gently support the body when it’s affected by coldness or stagnation.

One of vinegar’s key benefits in Yakuzen is its ability to relieve blood stasis—a common cause of symptoms like stiffness in the back, period cramps, or cold sensitivity, often linked to Qi or blood not flowing smoothly. Vinegar is also used to enhance digestion, support detoxification, and even eliminate internal parasites.

While vinegar is beneficial in small amounts, it's best enjoyed in moderation. Studies suggest that 1–2 tablespoons a day is a good amount for health benefits. Excessive intake may irritate the stomach lining, especially if taken on an empty stomach.

Yakuzen Classifications
Nature – Warm（温）
Channels – Liver (肝), Stomach (胃)
Flavor – Sour (酸), Bitter (苦)

How does vinegar help you?

1. Improve your Qi and blood circulation
2. Remove blood stasis
3. Improve digestion
4. Eliminate toxins and kill internal parasites

Good for the following symptoms

1. Bleeding caused by blood stasis
2. Pains caused by blood stasis
3. Stiff back
4. Sensitivity to cold
5. Period cramps caused by blood stasis/cold
6. Indigestion
7. Poor appetite
8. Heavy stomach
9. Food poisoning
10. Itchy skin

Cautions

It's very important to know about your body conditions before choosing foods.
Do not eat too much of particular foods at once.
Do not eat the foods you are allergic to.
There are foods to avoid if you are pregnant / have a disease. Ask your doctor before you start Yakuzen.