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mineral hot-spring egg boiling

process / process-mineral-spring-egg-boiling

鉱泉での卵茹で

Practice, documented as a present-day visitor activity at Northern Thai geothermal hot springs (e.g. San Kamphaeng, Fang), of boiling eggs (species not specified in the read sources) directly in geyser/spring water (105C per relevant records and relevant records; no lower bound given in the read sources, cooking in under 10 minutes). Distinct from the springs' earlier, pre-tourism local uses (mineral bathing, livestock washing, boiling bamboo shoots), which did not include egg-boiling in the read sources.

On this page (6 sections)
  1. Overview
  2. Sources for this overview (3)
  3. Other names
  4. Follow the connections
  5. Related entries (5)
  6. Culture (4)
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Reading the bitterness

At San Kamphaeng Hot Springs in Mae On District, Chiang Mai Province, geothermal energy from springs reaching 105°C and spouting more than 10 meters can cook eggs in under 10 minutes, according to tourism information on the local government’s official site (2022). The same section also mentions mineral bathing, Thai massage, and herbal water. The temperature and cooking time are figures stated by the municipal site and have not been verified as measurements by a third party.

According to a history article on the same site, the area was originally grassland with warm-water streams and natural hot springs, which nearby residents used to care for livestock, take mineral baths, and boil bamboo shoots. This historical description does not include 「卵を茹でる」 (in translation: "boiling eggs") as a use. In response to the 1972 oil crisis, a geothermal power feasibility study ran from 1972 to 1983 and drilled to a depth of 283 meters, but was discontinued for lack of economic viability. The site records that, under the 「協同村」 (in translation: "cooperative village") plan, a cooperative and the Tourism Authority of Thailand each invested 1 million baht, and it opened as a tourist site on December 22, 1984.

Similar activities at other northern Thai hot springs are documented in travel media. A 2021 article about Fang Hot Springs in Doi Pha Hom Pok National Park, Fang District, Chiang Mai Province, lists 「卵を茹でること(การต้มไข่)」 (in translation: "boiling eggs") among visitor activities alongside walks on a nature trail. It reports an average temperature of 30–80°C and geysers spouting more than 30–50 meters every 30 minutes. The operator is a national park, a state body, unlike the cooperative-associated San Kamphaeng.

Sources for this overview

  1. น้ำพุร้อนสันกำแพง (ข้อมูลท่องเที่ยว)

    องค์การบริหารส่วนตำบลบ้านสหกรณ์ (Ban Sahakorn Subdistrict Administrative Organization / อบต.บ้านสหกรณ์, Mae On District, Chiang Mai) / 2022 / government document / full text checked

    Checked for this overview: Confirmed the hot-spring egg-boiling description of 105 degrees and under 10 minutes. / Confirmed the description of original uses for livestock care, mineral bathing, and boiling bamboo shoots.

  2. เกี่ยวกับ (About) -- กิจการน้ำพุร้อนสันกำแพง ตามโครงการพระราชดำริ

    กิจการน้ำพุร้อนสันกำแพง (San Kamphaeng Hot Spring Enterprise, operated under the Sankamphaeng Cooperative Village Royally Initiated Project) / / other / full text checked

    Checked for this overview: Confirmed the history from geothermal power investigation to opening as a tourist site.

  3. บ่อน้ำพุร้อนฝาง ที่เที่ยวเชียงใหม่ มาอาบน้ำแร่ ต้มไข่ ชมวิวธรรมชาติ

    TrueID (travel content; individual author not attributable) / 2021 / other / full text checked

    Checked for this overview: Confirmed the egg-boiling activity, temperature, and geyser description for Fang Hot Springs.

Other names: ต้มไข่ (th), การต้มไข่ (th)

Follow the connections

mineral hot-spring egg boiling →is documented in→ Chiang Mai

Structured claims — open a section to read each claim's confidence, evidence and limits

Culture (4)

mineral hot-spring egg boiling is documented in Chiang Maicontextual

Scope: San Kamphaeng Hot Springs, Mae On District, Chiang Mai Province (tourism information on the official อบต.บ้านสหกรณ์ website).

Note: The temperature and cooking time are stated by the municipal site; they have not been independently verified by a third party.

「น้ำพุร้อนที่โพยพุ่งขึ้นสูงกว่า 10 เมตร อุณหภูมิสูงถึง 105 องศาเซลเซียส สามารถต้มไข่ให้สุกได้ในเวลาไม่ถึง 10 นาที ด้วยพลังงานความร้อนใต้พิภพแห่งนี้」 (in translation: "With geothermal energy from this hot spring, which spouts more than 10 meters and reaches 105 degrees Celsius, eggs can be boiled until cooked in less than 10 minutes"). The same section also mentions mineral baths, Thai massage, and herbal water.
Limitations: This is a municipal-site statement; neither temperature nor cooking time has been independently measured and verified by a third party.
Source: น้ำพุร้อนสันกำแพง (ข้อมูลท่องเที่ยว) (องค์การบริหารส่วนตำบลบ้านสหกรณ์ (Ban Sahakorn Subdistrict Administrative Organization / อบต.บ้านสหกรณ์, Mae On District, Chiang Mai), 2022) · full text checked
Show dataprocess-mineral-spring-egg-boiling —is_documented_in→ region-chiang-mai
claim: clm-hotspring-egg-sankamphaeng / type: cultural / updated: 2026-09-01
mineral hot-spring egg boiling — history: Chiang Maicontextual

Scope: History of San Kamphaeng Hot Springs, Mae On District, Chiang Mai Province (municipal official site).

Note: This historical description does not include 「卵を茹でる」 (in translation: "boiling eggs") as a use. Boiled eggs (ต้มไข่) are described as a present-day visitor activity in the tourism section of the same page. That is a separate context from this historical account of livestock care, mineral bathing, and boiling bamboo shoots. Masaru’s on-site observation of boiling eggs at the spring is consistent with describing it as 「後発の観光活動」 (in translation: "a later visitor activity").

The site records, after 「เดิมทีบริเวณนี้มีลักษณะเป็นทุ่งหญ้าและมีธารน้ำร้อน บ่อน้ำร้อนธรรมชาติ ซึ่งชาวบ้านบริเวณใกล้เคียงใช้ในการเลี้ยงสัตว์ อาบน้ำแร่ ต้มหน่อไม้」 (in translation: "Originally this area was grassland with warm-water streams and natural hot springs, which nearby residents used for livestock care, mineral baths, and boiling bamboo shoots"), a chronology of the geothermal power investigation prompted by the 1972 (2515) oil crisis (พ.ศ.2515-2526; 1972–1983); the 「หมู่บ้านสหกรณ์สันกำแพง ตามพระราชดำริ」 (in translation: "San Kamphaeng cooperative village under royal initiative") plan; joint investment by the cooperative and Tourism Authority of Thailand (1 million baht each; original 「ร่วมลงทุนฝ่ายละ 1 ล้านบาท」 (in translation: "each side jointly invested 1 million baht")); and the opening ceremony as a tourist site on December 22, 1984 (presided over by Privy Councillor ประกอบ หุตสิงห์).
Limitations: The historical account does not use the term 「ゆで卵」 (in translation: "boiled eggs"); its original uses were livestock care, mineral bathing, and boiling bamboo shoots. Egg boiling appears only in a separate tourism-information section of the same page.
Source: น้ำพุร้อนสันกำแพง (ข้อมูลท่องเที่ยว) (องค์การบริหารส่วนตำบลบ้านสหกรณ์ (Ban Sahakorn Subdistrict Administrative Organization / อบต.บ้านสหกรณ์, Mae On District, Chiang Mai), 2022) · full text checked
Show dataprocess-mineral-spring-egg-boiling —has_history→ region-chiang-mai
claim: clm-hotspring-history-sankamphaeng / type: cultural / updated: 2026-09-01
mineral hot-spring egg boiling is documented in Chiang Maicontextual

Scope: About page on the official site for the San Kamphaeng Hot Springs operation (a royal-project-associated cooperative).

The site states that the state electricity company studied geothermal power feasibility in 1972–1983 (พ.ศ.2515-2526), drilled to 283 meters, and discontinued the plan for lack of profitability. After a 1983 cooperative village committee resolution to develop 75 rai as a tourist site, it opened as a hot-spring tourist site in 1984 through a joint venture between the Tourism Authority of Thailand and the cooperative. Geologically, it also describes a 「ゲイサー型」 (in translation: "geyser type"), a subsurface temperature of 105°C, and a spout height of more than 10 meters.
Limitations: This page itself does not discuss a culture of boiling eggs. It mentions only cooperative products such as egg baskets, without describing the activity of boiling eggs in the hot spring. It is used only as supporting information on geothermal features and the site’s history.
Source: เกี่ยวกับ (About) -- กิจการน้ำพุร้อนสันกำแพง ตามโครงการพระราชดำริ (กิจการน้ำพุร้อนสันกำแพง (San Kamphaeng Hot Spring Enterprise, operated under the Sankamphaeng Cooperative Village Royally Initiated Project)) · full text checked
Show dataprocess-mineral-spring-egg-boiling —is_documented_in→ region-chiang-mai
claim: clm-hotspring-geothermal-exploration / type: cultural / updated: 2026-09-01
mineral hot-spring egg boiling is documented in Chiang Maicontextual

Scope: Fang Hot Springs in Doi Pha Hom Pok National Park, Fang District, Chiang Mai Province (1 travel-media article).

Note: One travel-media article (a lower-priority source) supports egg boiling as an activity at a northern Thai hot spring other than San Kamphaeng. Its temperature and geyser figures have not been independently verified. Because it is run by a national park (a state body), its operator differs from cooperative-associated San Kamphaeng.

The article lists 「ทั้ง การต้มไข่ เส้นทางเดินศึกษาธรรมชาติ」 (in translation: "egg boiling and nature-trail walking") among activities at Fang Hot Springs. It gives 「อุณหภูมิเฉลี่ยจะอยู่ที่ประมาณ 30-80 องศาเซลเซียส」 (in translation: "the average temperature is about 30–80 degrees Celsius") and 「จะพุ่งออกมา 30 นาทีต่อครั้ง สูงกว่า 30-50 เมตร」 (in translation: "spouting every 30 minutes to a height of more than 30–50 meters"), and names the operator as 「อุทยานแห่งชาติดอยฟ้าห่มปก」 (in translation: "Doi Pha Hom Pok National Park"; the original uses 「ฟ้า」 (in translation: "Fa")).
Limitations: This is one travel-media article; its temperature and geyser cycle have not been independently verified. It is treated as a lower-priority source.
Source: บ่อน้ำพุร้อนฝาง ที่เที่ยวเชียงใหม่ มาอาบน้ำแร่ ต้มไข่ ชมวิวธรรมชาติ (TrueID (travel content; individual author not attributable), 2021) · full text checked
Show dataprocess-mineral-spring-egg-boiling —is_documented_in→ region-chiang-mai
claim: clm-hotspring-fang-corroboration / type: cultural / updated: 2026-09-01

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