
Chef Takumi
Candied Japanese Sweet Potatoes (大学芋, Daigakuimo)
Daigakuimo is simple student comfort: sweet potato cut stout, fried until the corners take color, then turned in a soy-sugar syrup that sets shiny instead of sticky.
A cooking platform built around craft, culture, and the stories behind what we eat.

Created by
Plain home food, and honest because of it: daikon cooked until translucent, konnyaku scored so it drinks the broth, and chikuwa lending quiet sweetness to the pot.
Daikon shows its age quickly. In winter, when it is heavy, crisp, and sweet at its prime, it needs very little from you. Cut it cleanly, soften it first, then let it sit in a good broth until the white flesh turns translucent. That change is the sign to watch for. The radish has stopped being raw vegetable and started becoming the dish.
Konnyaku makes some cooks hesitate. It looks stern, smells a little earthy when you open the package, and behaves like it has no intention of absorbing anything. We persuade it, not by force, but by scoring the surface, blanching it briefly, and simmering it quietly under an otoshibuta, a drop-lid. The cuts give the broth somewhere to enter, the blanching removes the raw smell, and the drop-lid keeps every piece bathing in seasoning without rough stirring.
This is nimono, a simmered dish, one of the core methods of washoku. The method matters more than the menu: dashi, a little soy, mirin, and sake, then time. Chikuwa is not there to shout. It gives a small fish-cake sweetness and makes the pot feel like supper, the way we do it here on a weeknight. Serve it warm, or better, let it cool in its broth and bring it back gently. Simmered food often learns its manners after resting.
Konnyaku has been eaten in Japan since at least the medieval period, made from the corm of the konjac plant and long valued in temple and household cooking for its firm, springy texture. Daikon became one of Japan's most important winter vegetables by the Edo period, when regional varieties were grown for pickling, grating, and simmering. Nimono developed as everyday washoku around the use of dashi and soy-based seasoning, a method suited to stretching small amounts of fish cake or meat through a pot of vegetables.
Quantity
600g
peeled and cut into 1-inch rounds
Quantity
1 block (about 250g)
scored and cut into bite-size pieces
Quantity
2
sliced on the bias
Quantity
3 cups
Quantity
2 tablespoons
Quantity
1 tablespoon
Quantity
2 tablespoons
Quantity
1 tablespoon
Quantity
1 teaspoon
Quantity
1/2 teaspoon, plus more for rubbing
Quantity
enough to cover, or 1 teaspoon raw rice
for parboiling the daikon
Quantity
a few thin strips
for finishing
| Ingredient | Quantity |
|---|---|
| daikonpeeled and cut into 1-inch rounds | 600g |
| konnyakuscored and cut into bite-size pieces | 1 block (about 250g) |
| chikuwa fish cakessliced on the bias | 2 |
| dashi | 3 cups |
| soy sauce | 2 tablespoons |
| usukuchi shoyu (light soy sauce) (optional) | 1 tablespoon |
| mirin | 2 tablespoons |
| sake | 1 tablespoon |
| sugar | 1 teaspoon |
| sea salt | 1/2 teaspoon, plus more for rubbing |
| rice rinsing water or raw ricefor parboiling the daikon | enough to cover, or 1 teaspoon raw rice |
| yuzu peel or scallion (optional)for finishing | a few thin strips |
Peel the daikon and cut it into rounds about 1 inch thick. Shave a thin bevel around the sharp edges, a cut called mentori, so the rounds don't chip and crumble as they simmer. If the daikon is thick, score a shallow cross on one face of each round. That little cut helps heat and seasoning reach the center.
Put the daikon in a pot and cover it with rice rinsing water, or plain water with a teaspoon of raw rice. Simmer gently for 15 to 20 minutes, until a skewer slides partway in with a little resistance. This first cooking softens the radish and draws out its sharpness, so the finished broth stays clean instead of turnip-bitter. Drain and rinse the rounds carefully.
Rinse the konnyaku, rub it with a good pinch of salt, and leave it for 5 minutes. Score both faces in a shallow crosshatch, then cut it into bite-size pieces. Blanch the pieces in boiling water for 2 minutes and drain. The salt and blanching remove the packaged smell, while the scoring gives this stubborn fellow more surface to drink from.
In a wide pot, combine the dashi, soy sauce, usukuchi shoyu if using, mirin, sake, sugar, and salt. Bring it just to a simmer and taste. It should be a little stronger than you want the finished dish to taste, because daikon and konnyaku will soften the seasoning as they cook.
Lay the daikon rounds in one layer if you can, then tuck the konnyaku and chikuwa around them. Set an otoshibuta, a wooden drop-lid, directly on the food, or use a circle of parchment with a small hole in the center. Simmer gently for 30 to 35 minutes. A hard boil knocks the daikon apart and toughens the chikuwa; a quiet simmer lets the broth move through the pot without bullying it.
Turn off the heat when the daikon is fully tender and translucent at the edges. Let everything rest in the broth for at least 30 minutes, or cool completely if you have time. This is when the seasoning settles in. Rewarm gently before serving, spooning a little broth over the top so each piece shines.
Arrange three daikon rounds with pieces of konnyaku and chikuwa tucked between them, building a little height rather than spreading everything flat. Spoon over a small amount of clear broth and finish with yuzu peel or scallion if using. Leave part of the bowl empty. Ma, that open space, keeps plain food from looking heavy.
1 serving (about 360g)
Culinary guides, cultural storytelling, and the editorial depth that makes cooking meaningful.
Discover Culinary Explorer
Chef Takumi
Daigakuimo is simple student comfort: sweet potato cut stout, fried until the corners take color, then turned in a soy-sugar syrup that sets shiny instead of sticky.

Chef Takumi
Japanese potato salad asks for warm floury potatoes, salted cucumber, a little ham, and Kewpie folded in after the heat has faded. Keep it rough, tangy, and quietly generous.

Chef Takumi
Skin-on satsumaimo rounds, a little sugar, and thin lemon slices simmer into a bright side dish that keeps its shape and tastes even better after resting.

Chef Takumi
Lotus root is all clean cut and crisp bite here: thin coins warmed in sesame oil, glossed with soy and sweetness, and finished before the snap has a chance to leave.