Cassava Can Release Cyanide If Eaten Raw

Cassava — มันสำปะหลัง (man-sam-pa-lang) — Manihot esculenta.

This root feeds a billion people — but eat it raw and it can release cyanide. You eat the root tuber. Lab fermentation work shows cassava resistant starch can be turned by gut bacteria into butyrate. It's rich in vitamin C, manganese, and copper. Copper helps your body put iron to work, contributes to normal energy metabolism, and supports healthy connective tissue and nerves. Khanom Man Sam Pa Lang is a classic chewy Thai steamed cassava cake made from grated cassava, steamed until translucent, then rolled in salted coconut and paired perfectly with hot jasmine tea. Man Sam Pa Lang Chueam is a Thai sweetened cassava dish of tender chunks simmered in sweet syrup, drizzled with salty-sweet coconut cream, and served alongside crushed ice. Always peel, soak, and cook cassava thoroughly — raw root can release cyanide, and repeated exposure can cause poisoning. It's also one of the easiest crops to grow.

Steamed Cassava Cake — ขนมมันสำปะหลัง (kha-nom-mun-sam-pa-lang)
Sweetened Cassava — มันสำปะหลังเชื่อม (mun-sam-pa-lang-chuam)

Food and nutrients

Rich in: vitamin C, manganese, copper

Research context

Cassava's resistant starch can be fermented by gut bacteria into butyrate — Frontiers in Microbiology, 2021 (in vitro)

Sources

Source: Teichmann J, Cockburn DW (2021). In-vitro fermentation & butyrate from resistant starch. Front Microbiol 12:640253. PMC8117019

Narration transcript

Opening

This root feeds close to a billion people, and eaten raw it can release cyanide. Cassava — มันสำปะหลัง, man-sam-pa-lang. That is why the tuber is always peeled, soaked, and cooked right through before it reaches the plate; proper cooking drives the toxin off. Cooked, it turns into a mild, starchy staple.

Steamed Cassava Cake (Khanom Mun Sampalang) (ขนมมันสำปะหลัง)

Steamed cassava cake is a classic chewy Thai dessert made from grated cassava, steamed until translucent, then rolled in salted coconut and paired perfectly with hot jasmine tea.

Sweetened Cassava (Mun Sampalang Cheam) (มันสำปะหลังเชื่อม)

Sweetened cassava is a traditional Thai treat featuring tender cassava chunks simmered in sweet syrup, drizzled with salty-sweet coconut cream, and served alongside crushed ice.

Nutrition summary

Cassava root is mostly starch, but it still offers a decent amount of vitamin C, plus manganese and copper.

Vitamin C

Vitamin C is used to build collagen and helps protect cells from oxidative stress.

Manganese

Manganese helps the body use food for energy and maintain normal connective tissue.

Copper

Copper helps your body use iron and maintain normal connective tissue.

Closing

Cassava is about the easiest staple there is to grow: snap off a length of stem, push it in the ground, and it roots. Just never shortcut the kitchen step. Peel, soak, and cook it fully every time, because that is what makes the root safe to eat. Follow Longevity Biome, and LIKE this video for regular updates.

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