Beans are popular vegetables that people prefer. The price in winter is usually 3-5 yuan/kg, and it is even as high as 8-10 yuan/kg before and after the Spring Festival. If the use of low-cost beans in the summer and autumn harvest and processing, wait until the off-season sales, so that low production costs, high economic returns, is a good way to get rich.
First, the main raw materials.
(1) Beans, choose fresh beans with the same color, similar length, and no pests.
(2) Color protection agent.
(3) Preservatives.
Second, the main equipment
(1) A wok.
(2) One vacuum packing machine.
(3) A vegetable cutting machine.
(4) A mobile water cooling pool.
Third, the operation method. Remove the tip and tail of the beans, wash them, and cut into small pieces of 3 cm long for use. Inject 2/3 of the water into the pot, and after boiling, add 0.2% of color-protecting agent (1 part of sodium sulfite, 2 parts of citric acid, and 1 part of salt) with water and stir well. Then put the cut beans into the pot. Inside, after the water is boiled, remove the beans and rinse immediately, cool for 10-15 minutes, remove and drain the water, then use a vacuum packaging machine, and add a suitable amount of preservatives when sealing the bags (the use of benzoic acid is recommended. Control within the national standard 0.5 g / kg). Immediately after the completion of packaging, put it into 85°C hot water for heat sterilization. The time is about 15 minutes. The minimum volume ratio between hot water and vegetable bags is required to be 4:1. Immediately after sterilization, remove from the sun and store it in storage.
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