5 minutes to 30 minutes.

Oats include both raw oats and prompt oats, so the cooking time will be different. Raw oats need to be cooked for 20 minutes to 30 minutes after the water boils and prompt oats need to be cooked for about 5 minutes after the water boils.

Oats (Latin name: Avena sativaL.) is a grass plant, "Materia Medica" called sparrow wheat. Oats are not easy to take off the skin, so it is called skin oats, which is a low-sugar, high-nutrition, high-energy food.

In China, oats are one of the major alpine crops, concentrated in alpine areas such as Damshang. It is mostly cultivated in the provinces and regions of Northeast, North China, Northwest, Southwest, and Central China, and its grain is used for grinding flour for consumption or as fodder with high nutritional value.

Annual herb. The fibrous roots are tough. Culms erect, smooth and glabrous, 60-120 cm tall, 2-4-noded. Leaf sheaths loose, smooth or basal ones puberulent; ligules hyaline-membranous, 1-5 mm long; leaf blades flattened, 10-30 cm long, 4-12 mm wide, scabrid, or sparsely pilose above and on margins.

Panicle spreading, pyramidal, 10-25 cm long, branches angular, scabrid; spikelets 18-25 mm long, containing 2-3 florets, their stems curved and pendulous, tips swollen; spikelets containing 1-2 florets; rachilla subglabrous or sparsely pubescent, not readily broken off; first lemma dorsiventrally glabrous, basal disk with only a few short hairs or subglabrous, awnless, or with only 1 straight awn on the dorsum First lemma dorsally glabrous, awnless, or with only 1 straight awn dorsally, second lemma glabrous, usually awnless. Caryopsis pale brownish pilose, longitudinally grooved ventrally, 6-8 mm long. Flowering and fruiting April-September.