Taiwan Food Atlas

Checheng Onion

Sweetness blown in by the Luoshan Wind — one of the Three Treasures of Hengchun
📍 Pingtung · Checheng · Onion-growing area🏆 Collector's Pick · Local Produce🧅 Harvest season: February–March

Checheng onion is a sweet onion variety grown in Checheng Township and Hengchun Town, Pingtung, shaped by the Luoshan Wind and sandy soil, and counted among the "Three Treasures of Hengchun." Every February and March, driving along Provincial Highway 26 through Checheng, endless onion fields line the road as farmers pull purple-red and golden onions from the sand. Wintered under the peninsula's fierce Luoshan Wind, these onions are sweet with a lingering finish raw, and clean-sweet without sharpness when simmered.

According to the Checheng Township Office, roughly 80 percent of Taiwan's onion production comes from the Checheng–Hengchun area. Historically, the "Three Treasures of Hengchun" were "sisal, onion, and Gangkou tea"; as Gangkou tea production has declined in recent years, some local sources now cite "sisal, onion, and watermelon" instead, but onion appears in both versions. Onions were introduced from the United States in the 1950s in more than 30 varieties; the peninsula's winter Luoshan Wind and well-drained sandy-gravel soil suit bulb formation, and in the 1970s the region supplied around 80 percent of Japan's onion imports at its peak.

What is Checheng Onion

Checheng onions refer to onions grown in Checheng Township and Hengchun Town in Pingtung, primarily yellow-skin sweet onions with some purple-skin varieties. The growing season runs roughly from February to March each year; farmers plant in late autumn and the onions grow slowly through the winter in the dry, cool climate of the Hengchun Peninsula under the Luoshan Wind, then are harvested in early spring. The defining characteristic is high sweetness and mild pungency — they can be eaten raw in salads or onion rings, tossed with bonito-flake soy sauce as an appetizer, or simmered in broth where they develop a pronounced lingering sweetness well suited to beef stew and onion soup. When selecting, look for dry, intact skin, a tightly compact root base, and a firm, heavy feel in hand.

Why Checheng? The Hengchun Town Office designates onions as one of the 'Three Treasures of Hengchun.' Data from the Council of Agriculture and Pingtung County Government indicate that approximately 80 percent of Taiwan's onions are produced in the Checheng and Hengchun area, the highest output in the country. Two reasons: first, the fierce 'Luoshan Wind' (落山風) of the Hengchun Peninsula's winter keeps the plants compact and sturdy and allows sugar to accumulate; second, the well-draining sandy soil is ideal for onion root development. The Checheng Township Farmers' Association and Hengchun Town Farmers' Association have long promoted direct-from-farm sales, and during the February–March season roadside stalls set up by farmers are common along Provincial Highway 26.

How to eat it like a local

🥗
Raw saladChecheng onions have mild pungency — slice thin, soak in ice water for 10 minutes, drizzle with bonito-flake soy sauce and a little sesame oil for a refreshing appetizer.
🍲
Sweet onion soupCut into large chunks and simmer with beef or chicken thigh for 30 minutes — the broth develops a pronounced sweetness without any added seasoning.
🥩
The golden ingredient for braised beefChecheng onions have high sugar content; braised together with beef they release natural sweetness, making them a key player in Western-style braises and curry.
🛒
Buy direct at source priceDuring the season, buy along the Checheng stretch of Provincial Highway 26 or at the Hengchun Town Farmers' Association direct-sales outlet — nearly half the price of city supermarkets and far fresher.

Local knowledge

Verified endorsements (sponsored content filtered out)

  • The Hengchun Town Office designates onions as one of the 'Three Treasures of Hengchun' — a representative local agricultural product.
  • Council of Agriculture and Pingtung County Government data: the Checheng–Hengchun area accounts for roughly 80 percent of Taiwan's onion output, the highest in the country.
  • The Checheng Township Farmers' Association and Hengchun Town Farmers' Association have long promoted direct-from-farm sales and onion festival activities.

Visitor tips

  • February–March is the season; outside these months, Checheng onions on the market are mostly refrigerated inventory, and flavor and sweetness are reduced.
  • When buying from roadside stalls, look for dry, intact skin and a firm feel. Don't buy any that are soft, sprouting, or moldy.
  • Onions in their mesh bags keep 1–2 months in a cool, well-ventilated spot; don't refrigerate — the humidity actually causes them to rot faster.

Information compiled from the Pingtung County Government Tourism Bureau, Hengchun Town Office, Checheng Township and Hengchun Town Farmers' Associations, and large volumes of public reviews; sponsored content has been filtered out. Photos will be replaced with exclusive channel footage after Dio's on-site shoot.

Frequently Asked Questions

Why is Checheng onion so sweet?

The Hengchun Peninsula's fierce winter Luoshan Wind keeps the plants compact and lets sugar accumulate, while the well-drained sandy soil suits root development — together producing the onion's sweetness.

When is Checheng onion season?

The main season runs from February to March; farmers plant in late autumn, and the onions grow slowly through winter under the Luoshan Wind before an early-spring harvest.

Is onion one of the "Three Treasures of Hengchun"?

Yes — the historical version of the list was sisal, onion, and Gangkou tea, and some recent versions swap in watermelon for tea, but onion appears in both.

Sources