Chai Tow Kway: Fried Radish Cake, Black and White

One cake, two very different plates

Order chai tow kway at a hawker stall in Singapore and the first question back is almost always “black or white?” — and the answer changes the dish completely, even though both start from the exact same steamed radish cake. White style keeps things pale and savoury, the cake fried until crisp-edged and bound with egg, seasoned with little more than fish sauce and white pepper. Black style adds a generous glaze of sweet dark soy, turning the whole plate a deep, almost caramel brown and pulling the flavour toward sticky-sweet rather than clean and savoury. Neither is more “authentic” than the other; they’re simply two branches of the same dish that diverged somewhere along the way and both took root hard enough that hawkers still specialise in one or the other.

The name itself causes confusion before you’ve even ordered — chai tow kway translates literally as “radish cake,” and in Cantonese-speaking kitchens the same characters read as lo bak go, the steamed radish cake served at yum cha, usually pan-fried in slices rather than cubed and scrambled with egg. The Teochew hawker-stall version this recipe follows is a specific evolution of that base cake: torn or cut into rough cubes, fried hard enough to develop a crust, and finished with egg and, in the black version, a proper coating of sweet soy — a street-food treatment that turns what started as a formal dim sum item into fast breakfast food built for a wok and a hot flame.

The steaming is the foundation

Everything about the final texture depends on the steamed cake itself, and the two things that ruin it most reliably are grating the radish too finely and rushing the steam. Coarsely grated radish, cooked briefly first to soften and release its liquid, keeps enough texture in the finished cake that individual strands of radish are still visible once it’s cut and fried — a cake made from radish puréed smooth turns gummy and loses the pleasant bite that makes the dish worth eating. The batter itself is a simple rice flour and cornflour slurry, thinned with the radish’s own cooking liquid rather than plain water, which is what carries the vegetable’s flavour all the way through the steam rather than diluting it.

A full forty-five minutes of steaming over vigorously boiling water is not excessive — cut it short and the centre of the cake stays gluey rather than setting into the sliceable, slightly springy texture that holds together in the wok later. Test with a skewer the way you would a cake: it should come out clean, with no wet batter clinging to it. Once steamed, the cake needs to cool completely, and ideally rest in the fridge overnight, before it’s cut. A warm cake is too soft to hold a clean cube shape and falls apart the moment it hits hot oil; a cold, firm cake cuts cleanly and fries into cubes with genuinely crisp edges rather than crumbling into mush.

Getting a proper crust in the wok

The defining textural pleasure of chai tow kway is contrast — a crisp, almost caramelised crust on the outside of each cube, giving way to a soft, faintly springy interior. That crust only develops if the cubes are left alone in the pan. Resist the urge to stir constantly; press the cubes down gently and let them sit undisturbed for a full two to three minutes per side over decent heat before turning, the same patience a good pan-fried dumpling demands. A pan that’s overcrowded, or cubes that get flipped every thirty seconds out of nervousness, will steam rather than fry, and you’ll end up with soft, pale cubes with no crust at all — technically cooked, but missing the entire point of frying the cake in the first place.

Preserved radish, chai poh, is essential in both versions: small dice of salted, dried radish, rinsed briefly to soften and cut the raw saltiness, then fried with the garlic until deeply fragrant. It contributes a chewy texture and a concentrated savoury-sweet flavour that fresh radish alone can’t provide, since most of the fresh radish’s character has already gone into the steamed cake and cooked out during steaming. Skip the preserved radish and the dish tastes strangely one-note, missing the little pockets of chew and salt that punctuate each bite.

White versus black, ingredient by ingredient

The white version relies almost entirely on fish sauce and white pepper for seasoning, plus the natural savouriness the preserved radish and garlic bring to the pan. The egg is folded through gently, off the heat or on very low heat, so it sets into loose, soft curds rather than a solid sheet — think of it more as binding the cubes together than as a separate component of the dish.

The black version adds sweet dark soy sauce — a thick, molasses-like soy distinct from ordinary dark soy, sold specifically as “sweet soy sauce” or “kicap manis” style sauce at most Asian grocers — tossed through the cubes before the egg goes in, so every cube gets properly coated and glazed rather than just splashed with colour. The sugar in the sauce caramelises slightly against the hot pan, adding a faint char-sweetness that the white version never develops. Because the sauce already carries plenty of salt and sugar, the black version needs less additional seasoning than the white one; taste before reaching for extra fish sauce.

Serving and the condiments that matter

Both versions get finished with sliced spring onion and, at most stalls, a small pool of chilli sauce on the side rather than mixed through — a specific style of hawker chilli sauce, sharp and slightly sweet, sold in squeeze bottles at chai tow kway stalls and different from a generic sriracha. Sliced fresh red chilli on top adds a cleaner, sharper heat for anyone who wants more than the sauce alone provides. Eat it hot, straight from the wok — the crust softens within a few minutes as residual steam from the interior works its way out, so this is not a dish that holds well once plated.

Make-ahead and storage

The steamed radish cake is the part worth making ahead — it keeps well in the fridge, tightly wrapped, for up to four days, and the extra chill time actually firms it up further, making it easier to cube cleanly. It also freezes well whole, unfried, for up to two months; thaw fully in the fridge before cutting and frying. Do not fry the cubes ahead of serving, though — reheated fried chai tow kway loses its crust entirely and turns soft and slightly rubbery, closer to a steamed leftover than the crisp dish it started as.

This is classic hawker-breakfast company: serve it alongside popiah for a spread built almost entirely around radish and turnip prepared two very different ways, or pair it with a bowl of bak kut teh for a full coffee-shop breakfast. A cup of teh tarik rounds the table out properly.

Why English-speaking menus call it “carrot cake”

Nothing in this dish contains carrot, which trips up nearly every first-time visitor to Singapore who orders “fried carrot cake” expecting something orange and sweet. The confusion comes from translation: in Cantonese and Teochew, the word for radish (lo bak / chai tow) and the word commonly used for carrot got conflated somewhere in the transition to English-language hawker signage decades ago, and “carrot cake” stuck as the English name even though the dish is, and always was, entirely daikon radish. Older Singaporean hawkers will sometimes clarify unprompted — “radish, not carrot” — precisely because so many tourists have asked about the missing carrot over the years. It’s worth knowing before you order, so the pale white cubes on the plate don’t come as a surprise.

Origins in Teochew home cooking

Steamed radish cake predates its hawker-stall fried form by generations, rooted in Teochew and Cantonese home cooking where daikon was combined with rice flour as a way to stretch a modest vegetable into something substantial enough to serve a family, especially in leaner years when rice itself was rationed or expensive. The steamed cake alone — sliced and pan-fried plain, or eaten as-is with a dip of chilli and soy — remains a dim sum staple under the name lo bak go. The specific hawker treatment of tearing the steamed cake into rough cubes, frying it hard in a wok, and scrambling it through with egg developed later, as Teochew and Hokkien street cooks in Singapore and Penang adapted the home-style cake into faster, more portable breakfast and supper food suited to a wok station rather than a steamer at home.

A note on ingredient sourcing

Chai poh, the preserved radish, comes in two grades worth knowing apart — a saltier, chewier coarse-cut version and a sweeter, softer fine-cut version sometimes labelled “sweet preserved radish.” Either works here, but taste a small piece before adding it to the pan; the coarse version needs a longer rinse and a shorter cooking time to avoid oversalting the dish, while the sweet version can go in with barely a rinse at all. Sweet dark soy for the black version is worth seeking out specifically rather than substituting ordinary dark soy sweetened with sugar at home — the commercial sweet soy has a thicker, more syrupy texture from molasses or palm sugar that coats the radish cubes properly, where a home-sweetened dark soy tends to run thin and pool at the bottom of the pan instead of clinging to the food.

Troubleshooting a soggy cake

If the steamed cake turns out soft and pasty rather than sliceable even after a full night in the fridge, the most likely culprit is too much liquid relative to flour in the original batter, often from radish that released more water than expected during the initial cooking step. Weigh the reserved cooking liquid before topping it up to 400ml rather than eyeballing it, and if the radish released noticeably more than that, reduce it briefly over heat before mixing in the flour so the starch ratio stays correct. A cake that’s still too soft to cube cleanly can still be salvaged by frying it in larger, flatter pieces rather than cubes — it won’t have the same tumbled, craggy texture, but it will still crisp up reasonably well in a hot pan.