1. Why Did a Failing Restaurant Start Selling Fried Chicken?
Modern karaage appeared on restaurant menus around 1932 (Showa 7) at a cafeteria called "Mikasa" in Ginza, Tokyo [1]. That year, Mikasa opened a specialty chicken restaurant in Ginza 1-chome, but it lost money, which hurt the main store as well [1]. To fix this, the head chef reportedly created fried young chicken, which became the shop’s signature dish [1]. So, one dish from a struggling shop became the starting point for today’s staple.
However, it is not certain that one single person invented it. It is safer to accept this as the "Mikasa theory" reported by the Japan Food Newspaper [1]. When making karaage at home, what happens in each step? If a shop sells a product, they must cook it safely and consistently every time.
2. What Does Each Step Do, from Seasoning to Frying Twice?
Home recipes usually follow this order: season the chicken with soy sauce, coat it in flour, fry it, take it out of the oil to rest, and fry it again. This article focuses on the flour, the resting time, and the heating standard, as these can be checked with data. The role of seasoning is simply to add flavor here.
Every step shares one goal: "heat must reach the center of the meat." The golden-brown color is separate from this goal. How do we decide if the heat has reached the center?
3. How Hot Must the Center of the Chicken Get to Be Safe?
Chicken may contain Campylobacter bacteria, which can cause food poisoning even in small numbers. However, this bacteria is weak against heat, so heating the center thoroughly is the solution [3]. The Ministry of Health, Labour and Welfare suggests that a "sufficient heat" standard is a center temperature of 75°C (167°F) for 1 minute or more [3]. The Setagaya Ward page lists equivalent combinations from the Ministry, such as 70°C (158°F) for 3 minutes, 69°C (156°F) for 4 minutes, 68°C (154°F) for 5 minutes, 66°C (151°F) for 11 minutes, or 65°C (149°F) for 15 minutes [2]. The idea is that lower temperatures work if held for longer times.
It is important to note that this is the "center of the meat" temperature, not the "oil" temperature. The outside may brown at the oil’s heat, but the center temperature is different. You cannot tell if the standard is met just by looking at the color or the cut surface. It is checked with a center thermometer or similar tool.
4. What Was Katakuriko Starch Originally Made From?
The starch often used for karaage is called "katakuriko." As the name suggests, it was originally starch taken from the roots of the Katakuri plant (a lily family flower). However, because Katakuri plants became scarce, starch from potatoes, which have similar properties and were promoted for cultivation in Hokkaido, began to be used [5]. Most katakuriko sold today is potato-based. The name remained, but the material changed.
After coating the chicken in flour, it goes into the oil. Why is it taken out once during the process?
5. Why Let the Chicken Rest Between the Two Fryings?
Double-frying often involves taking the chicken out of the oil for a few minutes after the first fry. A cooking article from Lifehacker explains that during this rest, heat travels to the center while allowing moisture to evaporate from the skin (coating) without overcooking the soft inner meat [4]. It is explained that heat continues to reach the center during the rest.
However, the exact temperature, seconds, and minutes vary by source. There is no single fixed number. Also, this explanation comes from a cooking article and is not a guaranteed effect. It is reasonable to view the resting time as a pause to help heat the inside and dry the coating, not just for color. During this rest, you must still consider if the center meets the safety standard. The cooking article explains that the soft inside should not be overcooked, while the coating should lose as much moisture as possible [4].
6. Is Karaage Written with the Character for "Tang" or "Empty"?
"Karaage" can be written with the character for "Tang" (China) or "Empty" (Sky) [1]. Because it uses the character for Tang, people often think it came from China, but the origin of the word is not clearly defined. A book on shojin ryori from the Edo period (1772) mentions "karaage" as fried tofu simmered in soy sauce and sake [1]. This shows that even with the same name, it was a different dish from today’s chicken karaage. Therefore, the history of the word "karaage" and the history of chicken karaage spreading from Ginza restaurants may not be on the same line.
7. What Can You Check at Home When Making Karaage?
At home, you can check the ingredient label on a bag of katakuriko to see if the starch source is listed as potato. When making fried food, you cannot confirm the center is cooked just by looking at the color or cut surface, so it is checked with a center thermometer. When using fire and hot oil, always do so with an adult.