Xu Yi smiled and shook his head, what the hell is this a fat man, the analysis is the way, if you want to know everything, you don't have to come over and ask them.

The fat man took a Qingtuan and handed it to Xu Yi, and asked him, "What do you think is the difference between this and when it first came out of the pot, except for the taste?"

Xu Yi nodded, he had compared this difference, so he naturally understood, and said: "The taste is not as fragrant as when it first came out of the pot, and it is a little harder than when it first came out of the pot." ”

The fat man smiled and said, "It's the problem of this skin hardening, I guess you did this last night, right?"

Seeing Xu Yi nodding, the fat man continued: "Although this Qingtuan is still a little sticky to its teeth when it is eaten now, it is already a little hard, and it is not as waxy as when it was just out of the pot or when it was cooled for a long time. In fact, this is already calculated, if this thing is not broken for a few more days, it can beat people's heads with it. ”

Liu Liping pursed her lips and asked, "Do you need to be so exaggerated?"

"It's not an exaggeration at all, I don't believe we can do it. It doesn't take much, let's just wait until this weekend to see it, but at the beginning, you have to let the skin dehydrate in the sun, otherwise it will grow mold. ”

Liu Liping glanced at the fat man and said, "Come less, such a delicious thing, you waste food so much, did your mother make it?"

The fat man said with a smile: "My mother is already past the age of letting me pee and mud, or wasting food, your aunt is really worried!" But obviously, Liu Liping didn't understand the fat man's words about her childishness, and she was stunned for a while. Seeing that Liu Liping didn't react, the fat man smiled and continued: "The hardening of the Qingtuan is caused by the aging of the starch in this skin. Generally, we call this rebirth. In fact, it doesn't matter if it's rice, steamed buns, potatoes, sweet potatoes or something. As long as it contains a lot of starch, it will inevitably come back to life after cooking. Strict zhòng affects the taste. ”

Xu Yi nodded, if you eat a hard cold rice, you will have a stomachache. "Is there any good way to avoid or solve this problem?"

However, the fat man was obviously still intoxicated with his "profession", and said to himself: "Starch aging is a problem that needs to be solved in the catering industry and food processing industry, which also leads to a lot of trouble." ”

Xu Yi sighed in his heart, this product has a rare opportunity to show off, it seems that it will definitely be unhappy not to let him play, and he secretly looked at his mobile phone and found that it was still too late. Xu Yi followed his words and said, "Then let's hear it." ”

"Starch aging is actually the process of recrystallization of starch molecules in food, and this is irreversible, just like rice steamed buns are definitely not as delicious as the first meal no matter how hot they are. Even if it is not leftovers, some need to be thickened and need to be cooled before eating, if the starch is aged too quickly, the dish will be permeable and thickened, and the quality will be greatly reduced. ”

"It's useless to heat it again after thickening the water, the root is still thin soup, and the impact is very great. ”

"It's like some instant lunch boxes sold in supermarkets or cold dumplings and stuff like that. If the starch is aging, won't it affect the taste?"

I saw Xu Yi nodding. The fat man continued: "The steamed buns and rice will become hard after a long time, but it is not just because the water in them is evaporated. One of the main reasons for this is that when starch ages and recrystallizes, the water contained in the starch is loosened and dehydrated. The water comes out easily, but even if you cook it with water, it is impossible for the water to bind back into the starch. ”

"Of course, this is not all bad, why is fried rice good overnight, in fact, it is also because the water that combines after the rice is reborn becomes less and less, and the combination between the rice grains becomes loose, easy to be fried, and it is not easy to stick to the shovel. When the starch is heated and softens again, the surface of the rice will not change its loose state even if it is stained with a layer of oil, and the new rice that has just come out of the pot is not so easy to fry. ”

"That's right. ”

"Yes, the aging rate and process of starch are affected by many factors, let's talk about the influence of temperature first. Generally speaking, above 60 degrees or below minus 20 degrees, the starch will not be denatured, this is like the steamed bun shop is not a big problem to sell out of the pot, he can not sell it can be put in the cage drawer and then steamed, and it will not affect the taste of the buns, but your Qingtuan can't keep it warm like this?"

Liu Liping asked: "No, this freezing is not very suitable, but it can't be heated continuously, this thing is originally steamed." ”

The fat man shook his head. "If the green ball made of matcha is steamed for a long time, if it is too long, not only will the flavor of the matcha be lost, but even the color will become unsightly because the chlorophyll in it is oxidized. ”

Xu Yi nodded, if the youth league in his family is too powerful, he will have to go back to the pot, but after a few times, the ball will turn yellow-brown, it doesn't matter if he eats it himself, even if it is black, it is no problem, but if he wants to sell it, this problem naturally has to be avoided. I do have space, but I can't get things out of the space in front of the buyers, even if it's unrealistic to put it in the space every day, if that's the case, then I can't get out of this store. Let's see if the fat man has any other way to solve this problem, and if he can't solve himself, dispel this idea. After thinking about it clearly, Xu Yi asked, "Is there any other way?"

"The methods are based on these influencing factors, such as the water content of the starch, the pH and the alpha of the starch molecules. For example, pH ......"

Hu Yifei saw Xu Yi peeking at his phone before, guessing that he might have something to do later, listening to the fat man's tirade again, he couldn't help frowning, reached out and knocked on the table and said: "The third child wants to find a way that he can use, wouldn't it be good if you just came up with a suitable idea, stop selling your pH." ”

The fat man scratched his head and said with a smile: "Okay, then let's make a long story short, let me tell you about this common solution, and let's screen it in combination with different situations." ”

"No matter what you do, the most important thing is the choice of material in the first place. Different starch aging rates are also different, which is caused by the different molecular structure of starch in them, relatively speaking, wheat and corn starch are relatively easy to age. Let's just say that cornstarch is actually quite good, not only has the special fragrance of corn, but the color of the finished product is also white, but it is easy to become thin when you use it to thicken this juice, and it lacks transparency, so this thing is rarely used to thicken in the kitchen, and it is used for sizing and paste. ”

Xu Yi thought that his youth group was made of waxy corn, and this corn starch was easy to age, so he had to replace it with something else, so he asked the fat man: "Does that mean that my waxy corn can't be used, don't you say that corn starch is easy to age, and if I replace it with glutinous rice flour, will it be better?"

"Relatively speaking, glutinous rice has a lot more amylopectin than ordinary starch, and the high amylopectin content will also delay the aging time, and if you change it to glutinous rice flour, I'm afraid it won't taste as good as it is now, so don't change it, you try again and again the ratio of corn flour and rice flour in this leather ingredient......"

"What do you say, Xu Yi didn't say that there are rice noodles in it, you can eat it?"

"That is, can you compare the sensitivity of our tongue?" The fat man naturally did not say that he did not eat it, but saw it. After teasing Liu Liping, he continued: "What kind of ratio can this ratio achieve, you have to test it yourself to make the form and aging of this Youth League balance, I really don't have this experience, or you can wait for me to finish the exam and go to your place to help you adjust together." ”

Xu Yi smiled and nodded, "I'll get it myself first, anyway, it won't delay reading much, if it doesn't work, you can help me after the exam." Can you tell me what else you can do?"

"Then there is the difference in processing methods, for you Qingtuan, it is to see the difference in the length of steaming time and whether to use a pressure cooker, without affecting the other qualities of the Qingtuan, as much as possible to improve the gelatinization process of the starch molecules in the skin, the higher the gelatinization process, the slower the aging rate of starch. ”

Hu Yifei frowned and asked, "Can a pressure cooker steam this?"

The fat man shook his head. "This steamer is really a problem, if you have a small amount of real yàn, ordinary high pressure is no problem. However, if this is manufactured in large quantities, this pressure cooker can only use large-scale commercial pressure cookers, such as the electric pressure cooker that I bought in the hotel at home is more than 70 liters, and this pot costs tens of thousands of yuan. ”

Hu Yifei nodded, then turned his head and asked Xu Yi: "But the third child, why do you want to study this?"

Xu Yi explained the reason to a few more people, and everyone suddenly understood.

Hu Yifei said: "Then let's put this pressure cooker thing for the time being, after all, this thing is not cheap, if the benefit is not good, it won't be smashed in your hands if you buy it." ”

Xu Yi nodded, "You have to take care of the risk, you really can't buy such an expensive thing just by thinking of it." ”

Of course, he would not say that he directly spent a lot of money to buy a "disposable" spectrometer in order to measure space. Qin Guodong said before that if the company's registered capital changes more than 20%, it must be re-reported, and he doesn't understand this, so it's better to cause less trouble. It's better to control the speed of spending money as much as possible, and I don't know how much it will cost at this stage of opening.

This youth league is also the result of its own whim, and I really don't know if there is a market for this thing and how it sells, so I really don't need to think about this pressure cooker in the short term.

After thinking about it clearly, Xu Yi said with a smile: "I'll see how long it takes to steam, it will change, as for the pressure cooker, put it for the time being, and the fat man will say if there is any other way?" (to be continued......)