Dragon beard vegetables are usually soaked for a few hours

Dragon beard vegetables usually need to be soaked for 2-4 hours, and the specific time depends on the water temperature, dryness of the vegetable body, and consumption needs. Dragon beard vegetable is a common algae ingredient, and the soaking time directly affects the taste and nutrient release. When soaking in cold water, it takes 3-4 hours for the vegetable to fully absorb water and stretch, resulting in a more flexible texture. If soaked in water at around 40 degrees Celsius, it can be shortened to about 2 hours, but the water temperature should not exceed 50 degrees Celsius to avoid damaging algal polysaccharides. It is recommended to change the water every hour during the soaking process to remove any residual sand particles or sea odor. Fully soaked dragon beard vegetables will expand 3-5 times in volume, appearing semi transparent and without a hard core.

In high temperature environments during summer or when urgent use is needed, diluted salt water can be used to accelerate foaming, but the salt concentration should be controlled within 3% to avoid excessive saltiness. If abnormal mucus or odor is found on the surface of dragon beard vegetables, they should be immediately stopped from consumption. After soaking, the dragon beard vegetables should be thoroughly rinsed. Before cold mixing, blanch them in water for 10 seconds to enhance their crispness. For stewed soup, it is recommended to use them directly to preserve their freshness. Dragon beard vegetables are rich in fucoidan and dietary fiber, and are suitable for cold mixing, soup cooking, or steaming after soaking. The recommended daily consumption is no more than 3 times a week, with 50-100 grams per time. Patients with thyroid dysfunction should consult a doctor. It is recommended to choose filtered water or mineral water for hair soaking, and avoid using metal containers to prevent oxidation and discoloration. Unused soaked dragon beard vegetables can be refrigerated and stored for 2 days, and need to be blanched again before consumption.