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Daikon

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Daikon is a mild-flavored winter radish. It is a member of the species *Raphanus sativus var. longipinnatus*. This plant is known for its fast-growing leaves and long, white roots.

White Radish Seeds
White Radish Seeds

While it is native to continental East Asia, it is now harvested and consumed all over the world. In some regions, it is grown for food. In other places, it is grown to help the soil. Because it is so versatile, it has many different names. In some cultures, it is called mooli. In English-speaking countries, it is sometimes called an icicle radish.

Leiden University Library - Seikei Zusetsu vol. 21, page 022 - 章魚葍, 秦野葍, 鼠葍 - Raphanus raphanistrum subsp. sativus (L.) Domin - 葛畑葍, 辛葍 - idem, 1804
Leiden University Library - Seikei Zusetsu vol. 21, page 022 - 章魚葍, 秦野葍, 鼠葍 - Raphanus raphanistrum subsp. sativus (L.) Domin - 葛畑葍, 辛葍 - idem, 1804

The radish grows in several distinct varieties. The most common form is the long, white radish. However, other colors and shapes exist. The Korean radish, or mu, is shorter and sturdier. It often has a pale green color near the top of the root. The watermelon radish is a beautiful heirloom variety from China. It has a dull green exterior. Inside, the flesh is a bright rose or fuchsia color. Some people call this the "beauty heart" radish. There is also the Cantonese lobak, which may have a light green top. These varieties differ in their flavor and how they grow.

Farmers use daikon in specific ways to manage their land. One use is as a tillage radish. This plant grows a massive, penetrating taproot. This root acts like a tool to break up compacted soil. When the root decays, it leaves a cavity in the ground. This makes it easier for the next crop, such as potatoes, to grow deep roots. This process helps prevent a hardpan, which is a layer of hard soil. The radish also acts as a nutrient scavenger. It pulls macro- and micro-nutrients deep into the soil. These nutrients are stored in the root. When the radish decomposes, it releases nitrogen for the next crop.

White Radish Seeds
White Radish Seeds

In many Asian cuisines, daikon is a central ingredient. In China, it is used in dishes like chai tow kway, or turnip cake.

In South India, it is used to make mullangi sambar. This is a popular soup made with lentils, tamarind, and onions. In Japan, daikon is used for many things. It can be served raw as sashimi or simmered in oden. It is also used to make pickles like takuan. In South Korea, it is a main part of kimchi. This is a traditional fermented dish. In Vietnam, pickled daikon and carrots are used in bánh mì sandwiches.

Specific regions have famous ways of growing and celebrating daikon. In Tokyo, a variety called Nerima daikon is very famous. It grows in the local Kanto loam soil. This radish is famously difficult to pull from the ground. This unique trait led to the Nerima Daikon Pulling Contest. In this event, people compete to see who can harvest the most or longest radishes. In Nerima, even school children eat the radish. They eat a dish called Nerima Spaghetti, which uses grated daikon as a topping.

From a nutritional standpoint, daikon is very healthy. It is composed of 95% water. It contains 4% carbohydrates. It has less than 1% protein and less than 1% fat.

White Radish Seeds
White Radish Seeds

A standard serving provides about 18 calories. It is a rich source of vitamin C. One serving provides 24% of the Daily Value for this vitamin. This makes it a light and nutritious vegetable for many different diets.

Beyond the kitchen and the farm, daikon has other uses. It can be used in a process called Rokushō. This is a method used to prepare metal surfaces for chemical patination. This shows how a simple root can connect to many different fields of human activity. Whether it is feeding people, improving soil, or helping with metalwork, daikon plays many important roles.

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File:Leiden University Library - Seikei Zusetsu vol. 21, page 022 - 章魚葍, 秦野葍, 鼠葍 - Raphanus raphanistrum subsp. sativus (L.) Domin - 葛畑葍, 辛葍 - idem, 1804.jpg
Leiden University Library - Seikei...
File:White Radish Seeds.jpg
White Radish Seeds.jpg
File:Li Wah Dim Sum - Turnip Cake (5339806715).jpg
Li Wah Dim Sum - Turnip Cake (5339806715).jpg
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