As the Lunar New Year approaches, many families are stocking up on holiday provisions. Dried goods are essential for these celebrations, and as we all know, they require soaking before use. But should you use hot or cold water? Different dried goods require different soaking methods.
Different Soaking Methods for Different Dried Goods
Soak wood ear mushrooms, white fungus, and dried tofu skin in cold water. Using hot water to soak wood ear mushrooms and white fungus not only prevents them from fully rehydrating but also makes them mushy and sticky, with many nutrients dissolved and lost. While cold water soaking takes longer, it results in a fresh, tender, and crisp texture.Dried tofu skin also benefits from slow soaking in cold water. Boiling water can cause it to break apart, rendering it unusable. When soaking, place a plate on top of the tofu skin to ensure it stays fully submerged. This not only shortens soaking time but also promotes even rehydration, guaranteeing the best texture.The distinctive flavor of dried shiitake mushrooms comes from two components: mushroom essence and guanosine monophosphate (GMP). GMP, in particular, has an umami intensity dozens of times stronger than ordinary MSG. When soaking dried shiitake mushrooms, use lukewarm water around 20–35°C. This allows the mushrooms to absorb water, soften, and expand more easily, while also fully decomposing the GMP to release its rich umami flavor.Additionally, avoid soaking for too long. Once the caps are fully softened, immediately drain and pat dry. Steam kelp. Kelp contains alginic acid and alginate, which are insoluble in water but possess strong water-absorbing and swelling properties. Once hydrated, a viscous gel forms on the surface, preventing further water penetration, making thorough rehydration difficult.Moreover, most of the iodine in kelp is concentrated on the surface, and prolonged soaking causes iodine loss. The best method is dry steaming: spread the kelp in a steamer basket and steam for half an hour, then rinse with water. This yields tender yet crisp kelp. After soaking, adding a splash of vinegar when serving enhances its softness and crispness.First, soak sea cucumbers in cold water for about 6 hours until softened. Cut open the belly and remove any grit. Rinse in cold water for another 2 hours. Finally, soak in gently alkaline boiling water for about 2 hours, repeating this process twice. After draining, rinse thoroughly with clean water and "chill" with ice cubes to preserve the freshness of the meat.Never use salt when soaking sea cucumbers, as it hinders thorough rehydration and accelerates spoilage.
So, how should one select dried goods?
When purchasing dried goods, first assess the aroma before examining the color. Dried goods containing excessive sulfur dioxide emit a pungent, acrid sulfur smell, with stronger sulfur odor indicating higher sulfur content.Sulfur-smoked dried goods exhibit abnormal coloring. For instance, smoked silver ear mushrooms appear snow-white, whereas their natural hue is a pale yellowish-white—less visually appealing than the smoked variety. Smoked daylily buds display a pale yellow color with uneven yellow-white distribution, while unsmoked buds are golden or brownish-yellow with uniform coloring.Ensure complete dryness without mold or rot. The integrity of the dried goods' appearance indicates careful sorting and processing. The more uniform the texture, the better the quality and processing technique. Look for items free of insect damage and with natural coloration. Avoid dyed or bleached dried goods. Also, be wary of overly dull colors, which may indicate substandard products stored for too long.