First, the original ingredients. When processing preserved eggs, it is required that the contents of the quail eggs are normal, the freshness is high, and the shells are solid without pollution. Formula: water 50 kg, 3.5 kg of soda ash, 12.5 kg of quicklime, 2.5 kg of salt, 2 kg of black tea, 75 g of zinc sulfate, and 75 g of copper sulfate. According to the requirements of the formula, put the black tea in water and boil for 10-15 minutes. Then use a gauze to filter the tea. Heat the tea into a jar containing soda ash, quicklime, and zinc sulfate and copper sulfate. Stir thoroughly and cool it. Add salt and mix well.
Second, the cylinder, filling material. Place the fresh quail eggs in the jar, and place it 5-10 cm away from the cylinder mouth. Press the bamboo raft on the egg surface to prevent the egg body from floating after filling. Then, the material liquid cooled to 20°C is poured into the cylinder to submerge the eggs and seal the cylinder. The room temperature is controlled between 15-25°C. If the temperature is too high, rotten eggs and sticky shell eggs will appear. If the temperature is too low, the ripening period will be long and bitter.
Third, out of cylinder and packaging. When the temperature is 20°C, it can be marinated after 18-20 days of lead-free quail eggs. The quail eggs that have been discharged from the tank are coated with a 4 degree water glass solution and packed in boxes.
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