Recipes
Sweet Potato and Ginger Dessert Soup
Tender sweet potato in a light brown-sugar and ginger broth, with a complete cooking card and simple checks for sweetness and texture.
Jump to recipe ↓Recipe
- Total time
- About 30–40 minutes
- Method
- Stovetop simmer
- Difficulty
- Easy
- Allergens
- Check packaged sugar for ingredients and allergen information
About 3 dessert portions
Allow roughly 30–40 minutes, depending on preparation and how quickly the sweet potato softens. Use the texture check rather than a fixed finishing time. Check packaged sugar for ingredients relevant to your dietary needs.
Equipment: Stable cutting board, knife, peeler, kitchen scale, measuring jug, 2-quart saucepan with lid, stirring spoon, fork, tongs or slotted spoon, ladle and food thermometer for reheating.
Ingredients
- 500 g orange-fleshed sweet potato, weighed before peeling
- 30 g fresh mature ginger
- 50 g Chinese brown sugar slab or dark brown sugar, plus a little more to taste if needed
- 750 ml water, plus small additions if needed
Method
Wash and cut before heating
Wash your hands with soap for 20 seconds. Scrub the sweet potato and rinse the ginger under running water, without soap. Peel the sweet potato and cut it into roughly 1-inch chunks of similar size. Peel the ginger and slice it into broad coins about ⅛ inch thick. If using slab sugar, break it into small pieces on the board. Keep the stove off until preparation is finished.
Convert a measurement for this stepSimmer the potato with ginger
Put the measured water, sweet potato and ginger in the saucepan. Bring to a boil over medium-high heat, then lower to a gentle simmer and partly cover with the lid. Stay by the stove, stir gently occasionally and adjust the heat if it boils hard. Begin checking a potato chunk after about 10 minutes; it should be nearly tender before you add the sugar. If the liquid gets too low to surround the pieces, add a little water and return to a simmer.
Convert a measurement for this stepDissolve the sugar and check the center
Add the sugar listed in the ingredients. Simmer gently until it dissolves and a fork slides easily into the center of a sweet potato piece, often another 5–10 minutes. The chunk should still hold its shape when lifted; keep cooking if its center is firm. Taste a cooled spoonful of broth. Remove the ginger if its flavor is strong enough. Add a little sugar or water only if needed, dissolve any added sugar and return to a simmer.
Convert a measurement for this stepTurn off the heat and ladle
Turn off the burner as soon as the potato is tender. Use tongs or a slotted spoon to remove any remaining ginger coins. Divide the sweet potato among heat-safe dessert bowls, then ladle the broth around it. Let each portion cool to a comfortable eating temperature; the liquid and potato centers will be hot.
Convert a measurement for this stepRefrigerate extra portions promptly
Put leftovers in shallow containers and refrigerate at 40°F (4°C) or below within two hours, or one hour if the room is above 90°F (32°C). Do not wait for a whole pot to cool on the counter. Use within 3–4 days; discard soup left out beyond those limits. To reheat, bring the broth to a boil and check that the liquid and potato reach 165°F (74°C) throughout with a food thermometer.
Convert a measurement for this step
A spoon should slide through the sweet potato while the piece still holds together. Around it, the broth tastes of brown sugar and fresh ginger: sweet first, then a little heat. This Cantonese dessert soup, 番薯糖水, needs only a small pot and a few ingredients.
Serve it in modest bowls after dinner, with enough broth around the chunks to sip between bites. Orange-fleshed sweet potato gives this version its color. The goal is tender pieces in a light syrup, so keep the simmer gentle and check a chunk before it starts falling apart.
Ginger with a little bite
Choose fresh, firm ginger rather than a jar of minced ginger or a sweetened ginger drink mix. Mature ginger gives the soup a stronger bite. Slice it across the root into broad coins that you can find and remove before serving. The ginger preparation guide covers peeling and cutting if the knobs are awkward to handle.
The amount in the card makes ginger a noticeable part of the dessert. If you are uncertain about the heat, taste a cooled spoonful of broth while the potato finishes cooking. Remove the ginger when the flavor suits you. Adding more sugar can make the soup sweeter, but it does not remove the ginger already in the broth.
Keep the ginger coins separate from the sweet potato as you ladle. A fibrous slice is easy to mistake for another soft piece when both are under the liquid. Tongs or a slotted spoon make that last check easier.
Brown sugar and a clear broth
Chinese brown sugar slabs, sometimes sold as pin tong, are one choice for this soup. Ordinary dark brown sugar is a convenient alternative; weigh either form. Break a slab into manageable pieces before heating the pot so you are not trying to chop a hard block beside a boiling saucepan.
Dissolve the sugar fully before deciding whether to add more. Take the tasting spoon away from the steam and let the sample cool. If the broth is sweeter than you want, stir in a little water, bring it back to a simmer and taste again. You can adjust a bowl more easily than a whole pot, so stop when the syrup is pleasant to sip.
Do not mash the sweet potato to thicken the soup. Use a spoon to turn pieces gently, and lower the heat if they are tumbling around. Once the centers are tender, turn the burner off; continued cooking softens the edges further. A broken piece is still usable, though the broth will be cloudier.
A small dessert pot
The four-ingredient proportions are adapted from Jeannette's sweet potato and ginger dessert soup at Wok & Kin, using half the batch and sliced ginger. Wiffy's version at Noob Cook also cooks the potato only until it keeps a tender shape; that version includes longan and pandan, which are omitted here.
The card makes about three dessert portions. Bowl size and evaporation change the final amount, so divide the potato first and then share out the broth. The illustration shows the ingredients together; remove the ginger before eating. For a different make-ahead dessert, black sesame shortbread gives you a crisp option without another pot on the stove.
Extra soup belongs in shallow containers in the refrigerator promptly, not in a covered pot left out overnight. FDA handling guidance supports the cooling limits in the card. Use refrigerated soup within three to four days; when reheating, bring the broth to a boil and check that the potato and liquid reach 165°F (74°C). Reheat only the portion you plan to serve and handle the hot bowl carefully.