Kelp is a tasty food that can be served cold or in soup. But before eating, should be washed first, and then soak, and then soak the water and kelp together with the pot to do the soup to eat, so that you can avoid dissolving in the water mannitol and some vitamins are discarded, thus preserving the active ingredients in the kelp.
The practice of kelp and tofu soup:
1, the kelp will be soaked and softened.
2, cut the kelp into slices, and ginger slices together with the water in the water with high heat to boil. When the water boils, turn down the heat and cook for about 5 minutes. Kelp is difficult to cook, so you need to cook it more.
3. Add the tofu and cook over low heat for another 5 minutes. Tofu is easy to break if you cook it for a long time, so be sure to wait until the kelp is basically cooked.
4, wait for the kelp, tofu almost good after adding the appropriate amount of oil, salt, monosodium glutamate. Then cover the pot with a lid and cook on low heat for about 2 minutes. When the pot is ready, sprinkle with chopped green onion.
Expanded information:
Because of the influence of factors such as the temperature difference from the north to the south and the light, so that the growth of kelp maturity early and late in the same sea area or the same seedline. In the same sea area or on the same seedline, the maturity of the kelp is also sequential, so the harvest period extends from mid-May to early July.
The growth of kelp is mainly affected by temperature and light, and the amount of nitrogen nutrient content in seawater also affects the growth and yield of kelp. In addition, tidal currents, wind and waves also have a greater impact on kelp growth.
Growth area
Kelp is a cold water seaweed, natural growth of kelp in our country only appears in the Yellow Sea north of Qingdao, Bohai Sea. Kelp growing sea area requires smooth water flow, fertile water quality, high safety factor.
Growth temperature
The suitable growth temperature of kelp is 1-13℃, 15-20℃ is the optimal temperature for the development of kelp sporangium. 5-10℃ is the optimal temperature for the growth of sporangium. The growth of male and female gametophytes is fastest at 15℃ and slowest at 5℃.
Nutrient salts
Nitrogen and phosphorus play an important role in the growth and development of kelp gametophyte and sporophyte. The gametophyte stage grows slowly if it lacks nitrogen fertilizer, and develops poorly if it lacks phosphorus fertilizer. Iron has a great impact on the growth of sporangia, add a certain amount of iron fertilizer in the nursery stage.
Light intensity
Young spores in the strong light, low light, dark conditions can be dispersed, in the dark to 400lux light, embryonic spores can also germinate; gametophyte suitable light intensity of 1000-3000lux, but the production is usually controlled in the 800-1500lux. kelp larval sporangium (5-10mm) stage, the optimal light intensity 2000-3000lux, thin tender stage, the light intensity of 2000-3000lux. -3000lux, and the thin tender stage is suitable for light intensity of about 10000lux.
Soogle Encyclopedia: Kelp