As they spoke, they came to the edge of the Wei River.

Groups of tourists are walking and watching there, enjoying and playing together, or sitting on the ground, drinking and cooking, so lively.

The group went down to the river together, and there was already a boat waiting there. The ship has already set up a table, with fruit on it and wine poured on it.

Wei Renshi took the lead and walked on the boat, and everyone also got on the boat and sat down.

"Brother Renshi, didn't you say that there are several flower boats on this river...... Gu Peng looked left and right, and asked, "Why is our boat empty?" ”

"With so many people on our ship, where is it empty?" Wei Renshi asked rhetorically.

Gu Pengju rolled his eyes and said, "Brother Renshi, I've heard of a boatload of beautiful women on the Wei River in your realm, but I can tell you that this son is here for this." ”

"I'm in a hurry." Wei Renshi laughed out loud and gestured to the second dog outside.

Dog Er rowed the boat towards the center of the river. When we reached the center of the river, we went up again, and after a short time, I saw several boats coming down.

The boats came to a halt after approaching the boat they were on. Gu Peng lifted a few people to change boats, and only Wei Renshi, Li Chun and Fan Zhiyi were left on the original ship.

"These people ......" Li Chun shook his head, picked up the goblet in front of him, shook it in front of him, and said: "This glassware is really exquisitely made, and it is even more icing on the cake to contain this grape wine." ”

"I think this tea with ice and sugar is more to quench the heat and quench your thirst." Fan Zhiyi looked at the things on the table, and finally chose the same thing as Wei Renshi.

Wei Renshi looked at him: "Why don't you go?" ”

Fan Zhiyi smiled and said, "Don't make trouble, my son is looking at the person who is about to get married." ”

"Oh?" Wei Renshi and Li Chun were both taken aback, and hurriedly asked, "When is it set?" ”

"Two months to go." Fan Zhiyi laughed, and his eyebrows couldn't help but be happy and excited.

"So fast?!" Wei Renshi and Li Chun couldn't help but be happy for him.

"Just rush this matter, let's make a big deal!" Li Chun raised the grape wine in his hand and said to the other two.

Wei Renshi picked up the teacup in front of him and said with a smile: "Replace wine with tea, come!" ”

The three of them drank together, and they all exhaled comfortably, and the heat in their bodies seemed to have faded a lot, and the surroundings seemed to be much cooler.

Wei Renshi smashed his mouth and said: "It's a pity that the sugar in here is not good, less is not sweet, and more makes the tea thick and yellow." ”

"It's the best brown sugar you can buy on the market!" Li Chun leaned over to take a look, tasted it, and said, "Even if it is compared to the palace, it is almost the same." ”

"That's because you haven't seen white sugar and rock sugar." Wei Renshi was disdainful.

"What kind of sugar is that?" The two of them wondered.

Wei Renshi said: "White sugar is also called white sugar, white as snow, fine as sand, and rock sugar is crystal clear like ice. It's sweeter than these brown sugars, and it's nowhere near as greasy as these brown sugars. ”

This brown sugar is also sucrose, at this time sugar cane has been planted in the Tang Dynasty, and in the early Tang Dynasty, Tang Taizong Li Shimin sent people to India to learn the method of boiling sugar. These brown sugars are made from sugarcane as raw materials by boiling sugar.

It's just that its color is earthy yellow, and there are impurities in it, so the sweetness is not so strong, and the residual taste of sugar cane is too strong, and it looks a little greasy.

It is precisely because its color is earthy yellow that it is called brown sugar.

"Is there really this candy?" Li Chun expressed disbelief: "I haven't seen it in the palace." ”

"Why didn't you ......" Wei Renshi's words paused, and suddenly said mysteriously: "Lord Chun, do you want to add another industry?" ”

Li Chun was stunned for a moment and said, "Is there really this kind of sugar?" ”

"That's not it, if I had to try, maybe I would!" Wei Renshi said.

There is a method of making white sugar in the local method, which Wei Renshi has seen several times in the village where he teaches, and it is from an old man in the village who went to the county seat to sell sugar paintings.

The old craftsman is also an old stubborn, and he doesn't like the candy he buys, so he likes to make it himself.

Wei Renshi originally liked this kind of folk thing, so it was very novel, so he watched it a few times and learned a few hands.

I remember that it looked like muddy water was pouring down. First, the sugarcane is squeezed out of the cane juice, then put it into a vat and boiled into a yellow-black syrup with fire, and then pour it into the funnel to solidify the sugar, and then pour the yellow muddy water into the funnel and pour it down, which can take away the impurities and leave the white sugar.

Wei Ren thought about this matter in his heart, so he told Li Chun to send someone to buy some brown sugar in the market after he went back, it didn't have to be of too good quality, as long as it was brown sugar.

Li Chun nodded in agreement, and Fan Zhiyi was also looking forward to it.

However, it was said that everyone spent all day drinking on the flower boat, and it was not until dark that they were taken down from the boat and sent to Wei Renshi's mansion.

Wei Renshi put them at home for the night, and the next morning everyone hurriedly left Weinan and went back to Chang'an.

In the afternoon of the same day, Li Chun's people brought a lot of brown sugar to Weinan.

Wei Renshi asked people to pull those brown sugar into the winery, and called Sun Youqing to come over and give him a hand, and try to make white sugar together.

According to Wei Renshi's request, Sun Youqing found an empty house in the winery, set up an iron pot, and poured all the sugar he bought into the pot and burned it slowly.

The sugar slowly melted in the pot, exuding an attractive sweet smell, and after melting, the color turned black, yellow and red, which was very unsightly.

"Take some straw, and bring another tile, you don't need too much straw, you can plug the leak of the tile." Wei Renshi looked at the syrup boiling in the pot, turned around and said to Sun Youqing.

Sun Youqing did things very neatly, and soon came in with a tile slip, and handed the tile slip to Wei Renshi, Wei Renshi looked at it, the leak had been blocked with straw, and he also brought some hay in his hand and put it aside for backup.

The syrup in the pot became thicker and thicker as it boiled, and gradually turned into a thick black and yellow liquid.

Wei Renshi didn't know what the heat should be, but he had seen the old man who made the sugar painting a few times at that time, and he remembered the general process, but the specific standards were not clear, and he needed to test it himself.

Wei Renshi asked Sun Youqing to put the tile chute on the water tank, and then the two of them lifted the pot together, and slowly poured the thick black and yellow syrup inside into the tile slip, which was plugged with straw under the tile slip, and the syrup was thick so that it would not leak out.

At this point, it will come to an end for the time being, and you need to wait for the black sugar in the tile to crystallize in the leak of the tile.

Wait until the black sugar crystallizes, you can remove the straw, and then pour it into the funnel from above with yellow mud water, the yellow mud water enters the black sugar, and leaks down along the tile, you can take away the impurities in the black sugar crystals, flow into the cylinder below, and leave hoarfrost in the funnel, which is white sugar. And in the tank below, it is still black sugar.

It seems that I heard the old man say that you can also pour yellow mud directly into the syrup to decolorize, the decolorization effect is better, and it is much faster.

However, Wei Renshi is not sure, so he will try it with a conservative method first, if it can really be successfully decolorized through yellow mud water, the next step is to use yellow mud to directly mix it into the syrup to boil and filter, and decolorize.