Candied Sweet Potato
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026
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This Japanese-inspired candied sweet potato recipe offers a delightful balance of earthy sweetness and savoury depth. Known in Japan as Daigaku Imo, these potatoes are gently simmered in a light syrup of soy sauce, rice vinegar and brown sugar until tender and glossy. The addition of vinegar is a clever professional touch that prevents the glaze from seizing, ensuring each piece remains perfectly coated with a delicate, non-stick finish.
As a versatile vegan side dish or snack, these potatoes are best enjoyed at room temperature, making them an excellent choice for a buffet or a prepared lunch. The contrast of the orange or purple-skinned potatoes against the freshly toasted black sesame seeds provides a sophisticated aesthetic for any dining table. They are naturally gluten-free when using tamari, providing a nutritious and comforting vegetable dish that is high in fibre.
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Ingredients for Candied Sweet Potato
50g granulated or packed light brown sugar
60ml vegetable oil
2 tablespoons water
1 teaspoon soy sauce
1 teaspoon rice vinegar
1/2 teaspoons salt
2 large Japanese-style sweet potatoes, about 450g total weight, unpeeled, cut ran-giri style into chunks
1 to 1 1/2 tablespoons black sesame seeds, freshly dry-roasted
How to make Candied Sweet Potato
Combine the sugar, vegetable oil, water, soy sauce, vinegar, and salt in a skillet just large enough to hold the sweet potato chunks in a single layer. Place over medium-high heat and bring to a simmer. Arrange the sweet potatoes in the pan in a single layer and cover with a circle of parchment paper to keep the surface moist. Lower the heat to maintain a very gentle simmer and cook for 2 minutes. Cover the skillet with a lid (keep the parchment in place) and cook for another 2 to 3 minutes, or until the potatoes are tender. A toothpick inserted into the thickest part of a piece should meet no resistance. If the chunks are not yet tender, add a bit more water and simmer for another minute or two. Check to make sure the sugar doesn't burn.
Once the potatoes are tender, remove the lid and parchment and jiggle the skillet to allow the potato chunks to roll around in the rapidly reducing glaze (the vinegar, by the way, will keep the sugar from seizing after the glaze has cooled). After 6 minutes or so, the water and oil in the skillet will have separated and most of the water will have evaporated, enabling you to remove the lightly glazed sweet potato chunks with little or no oil clinging to them.
Transfer the glazed chunks to a plate, spreading them out in a single layer. Sprinkle with the black sesame seeds. Let cool to room temperature before serving. They keep at cool room temperature for 6 to 8 hours. If you will be keeping them longer, place them in a covered container and refrigerate for up to 2 days. For optimal texture, bring the potatoes back to room temperature before serving.
Descargo de responsabilidad
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Historia del artículo
La información de esta página ha sido revisada por médicos cualificados.
16 Enero 2026 | Publicado originalmente
Autores:
Editores de recetas del Reino Unido
Revisado por expertos
Editores de recetas del Reino Unido

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