Taiwan Food Atlas

Penghu Honey Sweet Potato

Grown in volcanic sandy soil — slim, autumn-winter harvest with exceptional sweetness
📍 Penghu · Baisha Qitou🗂️ Collector's Pick · Desserts🔖 Sandy soil / Autumn–winter harvest / Promoted by Penghu Farmers' Association

Penghu's sandy volcanic soil drains exceptionally well, receives intense sunlight, and has a significant day-to-night temperature difference — conditions that give sweet potatoes a fine fiber and a sweetness far higher than the same variety grown on Taiwan's main island. Every autumn-winter harvest season, the Penghu Farmers' Association holds a Sweet Potato Festival to promote the crop. At direct farm-sale venues in Baisha Township, freshly dug honey sweet potatoes can be purchased, and whether roasted or steamed, they deliver a naturally sweet, clean flavor.

What is Penghu honey sweet potato

The main varieties cultivated in Penghu include Jinshi (golden time), Tainong No. 57 (chestnut sweet potato), and Tainong No. 66 (red-flesh sweet potato). The sandy soil allows the roots to extend fully without being compressed by hardpan, resulting in a more elongated shape than main-island sweet potatoes. Sugar converts fully during roasting, and sugar syrup seeps through the skin — the origin of the name "honey sweet potato." They can be eaten roasted or steamed, and some producers process them into sweet potato cakes or sweet potato crisps for sale as souvenirs.

The Penghu County Farmers' Association holds a Sweet Potato Festival every autumn and winter, combining harvest experiences with agricultural product exhibitions — a popular family travel activity. The Penghu County Government Agriculture Bureau documents the history of sweet potato cultivation on Penghu's sandy farmland, treating it as an important characteristic crop of Penghu agriculture. Sweet potatoes are available at Farmers' Association supermarkets and at Baisha Township direct farm-sale points at accessible prices, and are one of the Penghu agricultural souvenir options beyond seafood.

How to eat it the local way

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Slow-roast to draw out the honeyed sweetnessRoast at low temperature (180°C) for 50–60 minutes. The sugar fully converts and syrup seeps through the skin — that is the moment of peak sweetness.
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Steaming best preserves the natural flavorSteam a whole sweet potato for 40 minutes. The natural sweetness is retained without loss. Paired with the savory umami of fresh Penghu seafood, the sweet-savory contrast is surprisingly delightful.
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Autumn-winter harvest gives the best qualityThe harvest period runs from around October to January of the following year, when sugar levels are highest. Buying in summer typically means the previous season's stored stock, with slightly less sweetness and texture.
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The Farmers' Association supermarket is the most convenient optionPenghu Farmers' Association supermarkets carry certified Penghu honey sweet potatoes with full item selection and weight labeling — the most convenient and reliable purchasing channel.

Local knowledge

Verified credentials

  • The Penghu County Farmers' Association holds an annual Sweet Potato Festival combining harvest experiences and agricultural promotion — a key activity in the county government's agricultural outreach.
  • The Penghu County Government Agriculture Bureau documents the history of sweet potato cultivation on sandy farmland, recognizing it as a local characteristic crop.
  • Baisha Township direct farm-sale points and Penghu Farmers' Association supermarkets both maintain stable supply and are recommended agricultural shopping locations on travel forums.

Visitor tips

  • The Sweet Potato Festival dates are announced annually by the Farmers' Association. Check the Penghu Farmers' Association official website before departure to confirm activity dates.
  • When bringing sweet potatoes back to the main island, note that they should not be refrigerated (low temperatures accelerate starch conversion and destroy sweetness). Store in a cool, well-ventilated place.
  • Some processed sweet potato cakes or crisps contain high sugar levels. Check the ingredient label; those with diabetes should consume in moderation.

Sources: Penghu County Farmers' Association promotion materials, Penghu County Government Agriculture Bureau farmland records, on-site information at Baisha Township direct farm-sale point. Photos to be replaced with Dio's own shots.

🗺️ View on the map ← All Penghu dishes