◎ Sendai French Chef's Blog
A 17-minute walk from Sendai Station toward Tohoku University's Katahira Campus (southwest direction).
A 6-minute walk from "Aoba-dori Ichibancho Station" on the Sendai City Subway Tozai Line toward Sendai High Court (southwest).
Along Gobashi-dori, Ichibancho.
A French bistro on the first floor with the French flag, opposite Mitsuhara-san.
French home cooking and wine
[La Fleur de Cerisier]
Owner chef Fumihito Sato
I will do my best to help you today as well.
We hope that you will feel that this encounter is a very valuable and meaningful encounter.
Please stay with us until the end.
This week I'm talking about the scientific changes in fried food.
So let's go right away!
[Does tempura become lighter after frying? ]
○ Deep-fried foods such as tempura absorb oil in the heating process, but it becomes lighter after frying. Why?
Basically, the temperature range common to all fried foods such as tempura is said to be 160 ° C to 200 ° C.
Since it is heated at such a high temperature, the food is exposed to high temperature in the oil, and even if it is heated for only a few minutes, the water contained in the food evaporates to the outside with tremendous force. I will continue to do it.
Normally, fried batter before oiling contains as much as 60-70% water.
However, looking at the amount of water after deep-fried food, the amount of water has decreased to 20 to 30% or less. Depending on the ingredients, it may reach 5% or less, which is almost dry.
On the other hand, oil is sucked into the food in exchange for water.
Oil and water do not melt and mix, so if the ingredients still contain water at the beginning of frying, the oil will not be sucked in and the heating to the inside will not proceed.
When the water content of the food is evaporated by heating, the oil gradually permeates by the amount of the evaporated water content.
The first important thing here is that oil is absorbed by replacing the water in the food, but the mass of oil is "lighter" than that of water.
Next, in deep-fried foods with batter such as tempura, even if the batter inhales more than 20% of the oil, only a few percent of the oil is absorbed inside the food.
This is because water vapor is trapped inside the clothes and the water evaporation of the food itself hardly progresses.
In this way, oil absorption occurs one step later after the water evaporates first, so if you subtract how the water content decreases when you finish frying and how the weight increases due to oil absorption, it is usually The weight of fried food is about 10% lighter.
For this reason, fried foods are lighter.
In addition, it can be seen from this phenomenon that the deep-fried good tempura evaporates enough water and absorbs more oil.
The amount of oil sucked by the ingredients is "oil temperature" and "time required for frying", "condition of the ingredients (whether or not the ingredients have many gaps in the fibers)", "amount of water contained", and "in the ingredients" It depends on the conditions such as "there are many clothes attached".
Therefore, when you make fried foods such as tempura, be sure to fully understand and be careful about these things.
Finally, put the data comparing the amount of oil contained in the fried shrimp with batter and the fried shrimp without batter on the two shrimp for tempura.
Amount of oil
Amount of water
Tempura shrimp batter
Contents of tempura shrimp
What you can see from this data
While 26% of the oil was sucked into the tempura batter, the water content was only 30%.
It can be seen that the amount of water in the shrimp inside is almost the same as when it was raw.
You can also compare it with the fried shrimp without batter.
Deep-fried shrimp are harder than fried shrimp with batter because the water content causes the oil to enter.
That's all for today!
Thank you for reading to the end (๑> ◡ <๑)
See you next time on La Fleur de Cerisier's blog! (o ^^ o)
We're rooting for you!
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Speaking of French in Sendai, La Fleur de Cerisier
[La fleur de cerisier La fleur de cerisier]
Means "cherry blossom" in French.
We hope that it will take root in this city like a cherry blossom and become a shop loved by everyone.
We hope that you will find a store that is useful to you.
La Fleur de Cerisier
1-15-20 Ichibancho, Aoba-ku, Sendai
Sonoda Building 1st floor