熬药 (áo yào) literally means 'to simmer medicine' and refers specifically to the traditional Chinese process of boiling or simmering dried herbal ingredients in water for an extended period—often 30 minutes to over an hour—to extract their medicinal properties. The character 熬 conveys prolonged, careful heating (often with patience or endurance), while 药 means 'medicine' or 'herbal remedy.' This practice is central to Traditional Chinese Medicine (TCM), where precise timing, heat control, and vessel choice (e.g., clay pots) are considered essential for efficacy and safety.

Ao yao is not casual cooking—it’s a therapeutic ritual requiring attention: herbs are typically soaked first, then gently boiled, sometimes with the lid slightly ajar, and the resulting decoction is strained and consumed warm. It’s commonly done at home under guidance from a TCM practitioner, especially for chronic conditions like fatigue, digestive imbalance, or respiratory issues. Though modern alternatives like granules exist, many patients still value the authenticity and perceived potency of freshly prepared decoctions.