If you are curious about the fruit of Chiang Mai and the north, try longan. It is a small fruit with a thin brown skin, translucent flesh and a black stone inside. Peel and eat them one at a time and you get a sweet taste. Dried longan and fresh fruit differ in texture, so you could taste the fresh fruit first.
A reference photo showing longan. It is not limited to photos of the Thai growing areas or varieties described in the text. Thai fruit 220215 Longan ลำไย 002 · Mattis · CC BY-SA 4.0 Resized for display · Photo used under CC BY-SA 4.0
When is the best time to eat it?
Main season June–August Listed as available all year Biao Kiao longan from Lamphun: harvest period listed as July–September
Use the main season, or the harvest period for regional fruit, as a guide. Actual availability can vary with the growing area, the variety and the weather.
What does it taste like?
The flesh is sweet, and the aroma varies with the variety. There is a black stone inside the white flesh, so you take it out as you eat.
Why this fruit is well known in Thailand
It is a good fruit to learn about in connection with northern Thailand. Biao Kiao longan from Lamphun is presented as a regional GI fruit, and it is enjoyed dried as well as fresh.
Good to know before you buy
Thai name
ลำไย
Harvest period
Main season June–August
Regional fruit
Biao Kiao longan from Lamphun: harvest period listed as July–September
How it is sold
Look at whether it is sold in bunches with the stalk or as loose fruit. Choosing by the variety and weight on the price label makes it easier to compare.
How to prepare and eat it
Split the skin and peel it off with your hands.
Take out the black stone when you eat the flesh.
If you also want to buy a dried product, look at the price and pack weight separately from fresh fruit.
A guide to prices
Bangkok retail prices · 14 October 2026 These are prices by variety and grade, surveyed by Thailand’s Department of Internal Trade. They do not apply to every stall on the street.
Whole-fruit retail prices for reference · Thai baht (THB)
Keep the price of a bag or tub of cut fruit separate from the per-kilo price of whole fruit. Bananas are priced per bunch in this survey.
Frequently asked questions
Can I only buy it in season?
The guide gives its timing as: Main season June–August. It is available all year, but volumes and prices can change with the season and the variety. The calendar does not guarantee that it is on sale on any particular date.
How do I compare a per-kilo price with the price of a tub?
Look at whether it is sold in bunches with the stalk or as loose fruit. Choosing by the variety and weight on the price label makes it easier to compare.
If you would like to read more about the food and the regions behind it, these sources are worth a look. Ingredients and cooking methods can vary from one cook to the next.