Do you wake up with a dry throat, feel easily irritated, or notice your face running red and warm by mid-afternoon? In Traditional Chinese Medicine (TCM), these everyday discomforts are often described as internal Heat — an imbalance in which the body's warming energy becomes excessive or misplaced. Rather than reaching for pills, Chinese food therapy (食疗, shi liao) has for centuries reached for the kitchen instead.
The principle behind qing re (清热, "clearing Heat") is beautifully simple: every food carries a thermal nature, and cool-natured foods are believed to help the body release excess warmth. This guide explains what internal Heat looks like, which cooling foods are traditionally used to clear it, and how to build a cooling diet that still feels nourishing — because in TCM, cooling the body should never mean starving it.
What Does "Internal Heat" Mean in TCM?
In TCM theory, the body is understood through a balance of Yin (cooling, moistening) and Yang (warming, activating). When Yang becomes excessive or Yin is insufficient, the body is said to have Heat. The classic text Huangdi Neijing (《黄帝内经》) teaches that illness arises when yin and yang lose harmony, and food is one of the primary tools for restoring that harmony.
Common signs of a Heat pattern
- Face and skin: a flushed face, red or warm skin, acne and small eruptions, or a tendency to feel hot
- Thirst: dry mouth and throat with a strong desire for cold drinks
- Digestion: constipation, dark or scanty urine, a bitter taste in the mouth
- Mind: irritability, restlessness, insomnia, or vivid, restless dreams (Heat disturbing the Shen, or spirit)
- Tongue: a red tongue body with a yellow or dry coating
Heat can also be localized — TCM speaks of Liver Fire, Heart Fire, Stomach Fire, and Lung Heat, each with its own flavor profile of remedies. A classic example is Liver Fire rising, which is traditionally linked to headaches, red eyes, and irritability, and is often addressed with chrysanthemum tea.
The TCM Nature of Cooling Foods
Cooling foods are classed by their thermal nature (xing) as cool (凉) or cold (寒), and by their flavor (wei) as mostly bitter (苦), sweet (甘), or light/plain (淡). The famous Ming-dynasty physician Li Shizhen, author of Bencao Gangmu (《本草纲目》), catalogued hundreds of such foods and their traditional uses — from mung bean for summer Heat, to bitter melon for draining Heat, to watermelon for quenching thirst.
In TCM food therapy, these foods work through a few traditional mechanisms:
- Clearing Heat: cool foods directly reduce excess warmth, like water on a fire
- Draining Dampness: some cooling foods also help the body move stagnant fluids, which TCM links to sluggish, heavy feelings
- Nourishing Yin and fluids: moist, sweet foods replenish body fluids (津液, jin ye) so the body can cool itself from within
12 Cooling Foods Traditionally Used to Clear Heat
1. Mung Bean (绿豆, lü dou) — the classic summer cooler
Mung bean is the most famous heat-clearing food in Chinese kitchens. Traditionally it is used to clear summer Heat, drain toxicity, and relieve thirst. A simple bowl of mung bean soup is a household remedy across China on hot days. In TCM, mung bean is cold in nature and sweet in flavor, entering the Heart and Stomach channels.
2. Bitter Melon (苦瓜, ku gua) — drains Heat and dries dampness
Bitter melon is bitter and cold, and TCM traditionally uses it to clear Heat, drain dampness, and support a calm, clear mind. Its bitter flavor is said to "descend" Heat, making it a traditional choice for irritability and skin eruptions. If the bitterness is too strong, blanching or pairing it with egg softens it.
3. Winter Melon (冬瓜, dong gua) — clears heat and drains dampness
Winter melon is cool, sweet, and plain, and is traditionally believed to clear Heat, drain dampness, and generate fluids. Winter melon soup with a little ginger is a gentle way to cool down without shocking the digestion.
4. Cucumber (黄瓜, huang gua)
Cool and sweet, cucumber is traditionally used to clear Heat, quench thirst, and support fluid production. It is mild enough for most constitutions and works well in salads or lightly stir-fried dishes.
5. Watermelon (西瓜, xi gua) — the "natural white tiger"
Watermelon is cold in nature and famously refreshing. In TCM it is traditionally used to clear summer Heat, relieve thirst, and generate fluids. Enjoy it between meals rather than in huge quantities, as excess cold fruit may weaken digestion.
6. Pear (梨, li) — moistens the Lungs and clears Heat
Pears are cool, sweet, and moist, and are traditionally used to nourish Lung Yin, clear Lung Heat, and ease a dry cough. Steamed pear with a little rock sugar is a classic TCM remedy for dry-throat seasons.
7. Chrysanthemum (菊花, ju hua) — clears Liver Fire and cools the eyes
Chrysanthemum is the go-to tea flower for Heat rising to the head. Traditionally it clears Liver Heat, benefits the eyes, and soothes headaches and irritability. A cup of goji chrysanthemum tea pairs its cooling effect with nourishing goji berries.
8. Lotus Seed Heart (莲子心, lian zi xin)
Lotus seed heart is bitter and cold, and TCM traditionally uses it to clear Heart Fire, calm the Shen, and support restful sleep. Its strong bitterness means a little goes a long way — a few seeds brewed as tea.
9. Tofu (豆腐, dou fu)
Plain and cool, tofu is traditionally used to clear Heat, generate fluids, and support healthy digestion. It is a flexible everyday protein that pairs well with cooling vegetables.
10. Celery (芹菜, qin cai)
Celery is cool and is traditionally used to clear Liver Heat and support calm. Its crisp texture and mild flavor make it easy to add to soups and stir-fries.
11. Seaweed (海带, hai dai)
Seaweed is salty and cold, and traditionally it is used to soften hard masses, drain dampness, and clear Heat. A small bowl of seaweed soup is a light, mineral-rich cooling choice.
12. Lotus Root (莲藕, lian ou)
Lotus root is cool when raw and warm when cooked, which makes it wonderfully versatile. Raw lotus root is traditionally used to clear Heat and cool the blood, while cooked lotus root is said to tonify the Spleen.
Foods to Reduce When You Feel Hot
Just as some foods cool, others stoke. If you are experiencing a Heat pattern, TCM traditionally recommends reducing:
- Spicy foods: chili, pepper, curry, and hot sauces
- Fried and greasy foods: deep-fried items that are believed to create damp-Heat
- Lamb and mutton: warm-natured meats that are traditionally considered heat-generating
- Alcohol and strong coffee: both are drying and warming in TCM terms
- Excessive sugar: heavy sweets are believed to generate dampness and heat
How to Eat Cool and Calm: Practical Tips
Start the day with a cooling congee
Congee (粥, zhou) is the perfect vehicle for cooling foods because it is gentle on the Spleen. Cook rice with mung bean and a slice of winter melon for a breakfast that clears Heat without taxing digestion.
Drink a cooling tea in the afternoon
When the afternoon brings a flushed face or irritability, brew a pot of chrysanthemum tea with a few goji berries, or try a cool honeysuckle tea. Sip it slowly rather than gulping ice water, which TCM says can shock the digestion.
Choose light cooking methods
Steaming, boiling, and gentle stir-frying preserve the cooling nature of foods better than deep-frying or heavy roasting. Soups and light broths are especially valued in TCM food therapy because they carry fluids into the body.
Add a little warming balance
Cooling foods do not have to be eaten cold. Adding a small amount of ginger, a few jujube dates, or a pinch of rice vinegar can balance a dish so it cools without chilling the Spleen — this is the essence of the "cold food, warm cooking" approach.
A Simple 3-Day Cooling Menu
Day 1 — gentle start
- Breakfast: mung bean and rice congee with a side of steamed bok choy
- Lunch: winter melon soup with tofu and a handful of goji berries
- Dinner: lightly stir-fried cucumber and celery with rice
Day 2 — the bitter reset
- Breakfast: plain rice congee with a few lotus seeds
- Lunch: bitter melon stir-fry with egg and a bowl of millet
- Dinner: steamed fish with ginger and scallion, plus cucumber salad
Day 3 — moist and soothing
- Breakfast: steamed pear with rock sugar
- Lunch: seaweed and tofu soup with rice
- Dinner: chrysanthemum-glazed chicken (chrysanthemum tea as the braising liquid) with steamed greens
Who Should Be Careful With Cooling Foods?
Cooling foods are not for everyone, and even for those who need them, moderation matters. TCM traditionally advises caution for:
- People with a cold or deficient constitution: if you often feel cold, have pale lips, loose stools, or low energy, heavy cooling foods may make you feel worse
- Weak Spleen and Stomach: bloating, poor appetite, or easy fatigue after eating signal that the Spleen needs warmth, not cold
- Pregnant and nursing women: strong cold foods such as bitter melon and mung bean are traditionally limited during pregnancy — always ask your healthcare provider
- During menstruation: many TCM practitioners suggest reducing cold foods during the period to avoid cramping
Listen to your body. If a cooling food leaves you bloated, cold, or tired, it is not the right food for your current state — TCM food therapy is always about the individual, not the rulebook.
Final Thoughts
Clearing internal Heat with food is one of the most practical expressions of Chinese food therapy. A pot of mung bean soup, a cup of chrysanthemum tea, a slice of cooling watermelon on a hot afternoon — these small choices are the original "self-care," handed down through centuries of kitchen wisdom. Eat with the seasons, eat with your body, and let the quiet cooling power of food do its gentle work.
Want to explore more TCM food therapy? Read about eating for summer, or dive into how food energetics works in TCM.