"Woo ......" Hearing this, Yan Peimin couldn't hold back anymore, feeling that it was itchy from his stomach to his throat, and all the things in his stomach were turning up, so he quickly reached out to cover his mouth and ran straight into the bathroom.

Seeing this, the fat man scratched his head and said, "Am I going too far?"

Xu Yi reacted relatively quickly, and followed Yan Peimin directly to accompany him into the toilet, and saw Yan Peimin squatting in front of the squatting position, "wow", and vomited all the breakfast.

Xu Yi reached out and gently patted Yan Peimin's back, helped him smooth out, returned to the dormitory, looked at the few people who had just reacted, shrugged helplessly, then poured a glass of water, handed it to Liu Liping, and snorted towards the bathroom.

Liu Liping took the cup, glared at Yu Hangsheng viciously, and entered the bathroom angrily.

Hu Yifei, who had been wearing headphones and reading a book, took off his headphones and gloated: "Fatty, what you said is really disgusting, let's make a big joke now, how do you clean up when those two people come out?"

"Well, what's so great about eating some pig feed, and I've even tasted the cat food at home. The fat man was a little reluctant in his heart, but this casserole boiled duck meat is not rotten, and this Hu Yifei is not the master, and he will definitely refuse to admit his mistake.

"I'll go, you still have this hobby, what's the taste?" Hu Yifei laughed when he heard it.

"It's just a fishy smell, what else can it smell like...... the fat man pouted, and then said: "Tell you, I went to Qinghefang when I went back this time, do you know why?"

"Why?"

The fat man said, "There's a shop there that has fried scorpions, and I went to eat this on purpose." I didn't have a chance to go there before, but this time I went back for a long time, and I remembered that it was over. ”

Hu Yifei was dumbfounded, this person is so delicious, can this thing be eaten?" "I'll go, it's creepy to think about this thing, I can't use this medicine to talk about, I can't eat it, you still run to eat this, you're not afraid of poisoning?"

"If you don't say that you can't learn to apply it, what is this scorpion venom, egg white, this oil pot, what protein does not lose its activation and denature, where does the toxicity come from? And those scorpions are milky white, less than two inches long, and even a little translucent kind of small scorpions, even if you let it sting, it is not as dangerous as being stung by a wasp, where can you eat bad people, if it is really dangerous, the fried scorpion is not more dangerous than me, I think he sometimes grabs the scorpion directly with his hand and throws it into the pot. But this thing is just a gimmick, there is nothing special in the mouth, five dollars for three, I bought ten yuan, I ate one and I was no longer interested, and the rest was thrown into the trash. ”

Xu Yi sighed, this fat man is really a foodie, he dares to eat anything, and he wants to eat anything. "You are also bold, it is really difficult for me to swallow, I only ate roasted grasshoppers and roasted dragonflies when I was a child, and I have never eaten anything else special, and now I don't have this mind at all. ”

When the fat man heard this, his eyes lit up, "Don't say it, this grasshopper is delicious, let me tell you, I ate fried it once in a restaurant two years ago." This thing tastes similar to the fried scorpion, it is also fragrant, and the price is not expensive, only more than 300 yuan per plate, but I really haven't eaten this fire, I don't know what the taste is. ”

Yan Peimin finished vomiting, only felt that his stomach was sour, wiped his mouth and walked out of the bathroom, listening to what the fat man said, he said: "Aren't there a lot of these things on the grass on campus, you go and catch them and eat them." ”

"Fourth, are you okay?" The fat man just wanted to disgust the fourth, but he didn't expect him to be so unresponsive, so he was a little embarrassed.

Yan Peimin shook his head and smiled, this matter can't be said to be all blamed on fat people, who makes himself greedy. "It's all right, you go on. ”

"Forget about this thing on campus, next time you are free, go to the third child's house, doesn't he have a mountain, let's go up the mountain to catch this thing here, who knows how many pesticides have been eaten, this medicine is not dead, who knows what will cause trouble if you eat it." ”

Xu Yi said with a smile: "Okay, you're going, I'll take you to catch it, there's not much else, this summer and autumn, this thing is everywhere." ”

"You're so disgusting, this worm can eat ......" Liu Liping obviously vomited at the fat man's Yan Peimin. "Just what you said about that yeast so badly, who can tell that you are a professional foodie?"

"What is it to eat grasshoppers, I'm normal, at least the third child also ate grasshoppers when he was a child, and people with really heavy tastes eat spiders and ......maggots."

Seeing Yan Peimin covering his mouth again and vomiting, the fat man hurriedly stopped, he didn't dare to say any more, change the topic, this has to be talked about again, even if the fourth child is fine, I am afraid that Liu Liping will turn her face.

"And there is always only one truth, I am analyzing the authenticity of this product from a professional point of view, it belongs to the most objective description, okay? At least I didn't like what the package said, what kind of hop seeds are used to extract this brewer's yeast, that's called fraud, isn't it more disgusting than me?" Yu Hangsheng shrugged, and even the bed was flickering and shaking, which had to make people wonder if this bed could last until the fat man graduated.

"Then can this thing still make wine?" Xu Yi couldn't help but have an idea when he heard it, he remembered that the sugar content of his cherries on the original report was not low, if this can be done, it is not okay to use this thing directly as a wine medicine, after all, there is no yeast on his cherries, if he wants to make wine, he has to add yeast to it, if this thing can make wine, it should be good to use this as a inoculation of the original bacteria, after all, this is also a thing for winemaking, and there should always be dormant yeast in it.

Xu Yi is naturally familiar with the work of making wine and medicine until brewing rice wine, almost every family in the village brews this thing, although he has not tried it, but he can always succeed if he does it a few more times, but if he changes to this cherry wine, he can even omit the process of making wine and medicine, of course, this process is definitely different, I am afraid that I will have to check some information to make sure.

The fat man smiled and said: "Most of this commercial-grade yeast food is dried and processed, and the yeast in it is inactivated, and basically does not have a fermentation effect, so it is basically impossible to think about using this to make wine or beer." Of course, it is not excluded that manufacturers are afraid of excessive nutrient loss, do not heat too high temperature, or use low temperature vacuum drying, in this case, it is indeed possible that there are dormant yeasts that survive and multiply on their own, but they can indeed be used for fermentation. ”

Xu Yi still wanted to ask again how to proliferate if there was yeast in this thing, but before he could ask, he heard Yan Peimin say, "Fatty, let's talk about the previous thing, don't talk about that thing, say something useful." ”

I really don't want to continue this topic, according to his own thoughts, in fact, he also thought that this was the same as eating mothers, that is, yeast, and as a result, it was a bag of pig feed, and he felt sick to his stomach when he thought about it.

"There are many types of yeast, and the most used one is brewer's yeast. ”

"According to the ratio of length to width of brewer's yeast cells, they can be divided into three groups: the first group of yeast cells are mostly round and oval, with a length-to-width ratio of less than two. The yeast of this group is mainly used for the production of beer, liquor and alcohol and bread, while the second group of brewer's yeast cells are mostly ovate or oblong-ovate, with an aspect ratio equal to two. Including some varieties of brewer's yeast, such as wine yeast and other strains, generally used for the production of wine and fruit wine. There is also a group of cells that are oblong and have a ratio of length to width greater than two. This group is resistant to high osmotic pressure and is generally used to ferment sugarcane molasses to produce alcohol. ”

"Didn't you just say something about fermentation at the top and fermentation at the bottom, or what kind of length-to-width ratio? Liu Liping said.

"In the beer industry, the yeast that floats on the top is called the upper yeast with a high degree of fermentation and is not easy to agglutinate and precipitate, and the yeast that is easy to agglutinate and precipitate and has a low degree of fermentation is called the lower yeast. ”

"According to the classification of brewer's yeast properties, the fermentation of beer on top requires the use of yeast. During fermentation, the yeast floats to the fermentation surface with carbon dioxide, and the temperature of this fermentation is relatively high, controlled at 15 to 20 degrees, and the aroma of beer brewed by this fermentation method is prominent. The following fermentation beer is made of the following yeast, after the fermentation is completed, the yeast condenses and precipitates to the bottom of the fermentation vessel, and the fermentation temperature is controlled at five to ten degrees, and the aroma of the beer is relatively soft. ”

"Is this a big difference?" Xu Yi asked, he didn't know anything about this.

"It's just a matter of process demand, and the final result is to brew qualified beer, but this fermentation technology is mainly popular in a few countries near the British Peninsula, and most countries in the world use the following fermentation method to brew beer, and the beer in our country is all brewed by the following fermentation method. ”

"Isn't the fermentation fast at a high temperature, why is it fermented at a low temperature in China, isn't it slow to ferment?" Xu Yi was a little puzzled.

After all, if the temperature is high, the microbial activity is also large, and it is easier to divide and proliferate, which is why it is easy to eat bad stomach in summer, but it is not easy to get food poisoning in winter, and each microorganism has the most suitable temperature for its survival, but this yeast, Xu Yi remembers, but the temperature of more than 20 degrees to 30 degrees is the best temperature for their reproduction.

"This has to say that the above fermentation process is different, which on the one hand promotes the brewing speed of yeast, but also leads to the content of diketone in the beer will increase sharply, because after fermentation in the fermenter, there is a post-fermentation process, at this stage, the yeast is also responsible for the reduction of diketone to butylene glycol. ”

"However, the number of yeast in the post-fermentation stage is small, and the number of this yeast is too small, and the possibility of diketone being reduced is not completely eliminated, which makes the wine have a taste of rancid rice. It is said that lendione is an indispensable thing in dairy processing, which gives yogurt a different flavor. However, when it comes to beer production, this thing has become an indicator of bacteria and beer maturity. If the content of diketone is high, it means that the beer is contaminated or not fermented well, and the fermentation method will make the post-fermentation time much longer, and the production speed of beer will be slowed down. ”

"This means that the fermentation below is better than the fermentation above, which is really slow work and careful work?"

"It's not absolutely good or bad, but it can only be said that it is a problem of palatability and the optimization of industrial production speed. ”

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