温中益气。
甘微苦温。有小毒，温中益气，多食令人闷。一名狸豆。（豆作狸首文、故名。）以上菽
豆
类。
宣、解表除烦。
苦泄肺。寒胜热。（藏器曰∶豆性生平、炒熟热、煮食寒、作豉冷。）发汗解肌。调中下气。
治伤寒寒热头痛。烦躁满闷。懊 不眠。发斑呕逆。凡伤寒呕逆烦闷、宜引吐、不宜用下药
以
子豉汤、能吐虚烦。血痢温疟。疫气瘴气。（豆经蒸罨、能升能散、
吐、得酒则治风、得薤则治
痢、得蒜则止血、炒熟又能止汗、孟诜治
用代麻黄汤、通治伤寒发表、亦治酒病。
）伤寒直中三阴与传入阴经者勿用。热结胸烦闷。宜下不宜汗。亦忌之。造豉法、用黑豆。
六月间水浸一宿。淘净蒸熟、摊芦席上。微温。蒿覆五六日后。黄衣遍满为度。不可太过。
取晒簸净。水拌干湿得所。以汁出指间为准。筑实瓮中。桑叶浓盖三寸。泥封。晒七日。取
出曝一时。又水拌入瓮。如是七次。再蒸过。摊去火气。瓮收。
一名豆 。理胃消水。
甘平。除胃中积热。消水病胀满。破妇人恶血。疗湿痹筋挛膝痛。黑大豆为 牙。生五寸长
。便干之。名为黄卷。用之熬过。服食所须。一法、壬癸日以井华水浸大豆。候生芽。取皮
阴干。（小儿撮口、初生豆芽、研烂绞汁、和乳灌少许、良。）
Warms the middle and supplements qi.
Sweet, slightly bitter, warm in nature, with slight toxicity; it warms the middle jiao and supplements qi, but excessive consumption causes chest fullness. Also known as Li Dou (Cat Bean). (Named so because the pod resembles the head of a cat.) The above belong to the category of Soybeans (Shu Dou).
Disperses the exterior, resolves the exterior syndrome, and relieves irritability.
Bitter flavor drains Lung Qi; cold nature overcomes heat. (Zang Xing said: Soybeans are neutral when raw, hot when stir-fried, cold when boiled, and cold when made into fermented soybean paste [Douchi].) It induces sweating and releases the muscle layer, harmonizes the middle jiao, and directs qi downward.
Treats chills and fever, headache, irritability, chest fullness, mental restlessness with insomnia, eruption of macules, vomiting, and regurgitation caused by Cold Damage (Shanghan). For Cold Damage presenting with vomiting, regurgitation, irritability, and fullness, emesis is indicated, while purgatives should be avoided. Zhizi Chi Tang (Gardenia and Fermented Soybean Paste Decoction) can induce vomiting for empty irritability. Treats bloody dysentery, warm malaria, epidemic qi, and miasma. (Fermented soybean paste, after steaming and incubation, has ascending and dispersing properties; mixed with wine, it treats wind disorders; mixed with Allium macrostemon, it treats dysentery; mixed with garlic, it stops bleeding; when stir-fried, it stops sweating. Meng Shen used it as a substitute for Mahuang Tang to generally treat the release of the exterior in Cold Damage, and also to treat alcohol-induced illness.) It is contraindicated in Cold Damage that directly invades the Three Yin meridians or transmits into the Yin meridians. For heat binding in the chest causing irritability and fullness, purgation is indicated rather than sweating, and Douchi is also contraindicated. Method for making Douchi: Use black soybeans. In June, soak overnight in water, rinse clean, and steam until cooked. Spread on reed mats. When slightly warm, cover with mugwort herbs for five to six days until covered with yellow mold, but do not over-ferment. Take out, sun-dry, and winnow clean. Moisten with water to the correct degree of dryness and wetness, determined when juice exudes between fingers. Pack tightly into a jar. Cover thickly with mulberry leaves to a depth of three cun, seal with mud, and expose to the sun for seven days. Take out, expose to sunlight for one shichen (two hours), moisten with water again, and return to the jar. Repeat this process seven times. Finally, steam once more, spread out to dissipate heat, and store in a jar.
Also known as Da Dou Huang Juan (Yellow Sprouts of Soybeans). Regulates the stomach and eliminates water retention.
Sweet, neutral in nature. Clears accumulated heat in the stomach, reduces distension and fullness due to water diseases, breaks up evil blood in women, and treats damp bi syndrome, tendon spasms, and knee pain. Black soybeans sprouted to a length of five cun, harvested when stools are dry, are named Huang Juan. They must be roasted before use, as required for dietary therapy. Another method: On Ren-Gui days (days associated with Water element), soak soybeans in fresh well water until they sprout. Take the bean skins and dry them in the shade. (For neonatal trismus [lockjaw], grind fresh soybean sprouts into a paste, squeeze out the juice, mix with milk, and administer a small amount orally; this is effective.)