Plant atlas Short
Sweet Leaf: Always Cook It, Never Drink It Raw
Sweet Leaf / Star Gooseberry · ผักหวาน · Sauropus androgynus
Sweet Leaf / Star Gooseberry — ผักหวาน (phak-waan) — Sauropus androgynus.
Sweet leaf — ผักหวาน, pak-waan. A mild Thai green: safe cooked, dangerous raw. Documented Sauropus androgynus outbreaks linked raw juice and large raw amounts to permanent lung damage, so it's always blanched or simmered. The edible part is the leaves — and sweet leaf is safe to eat only when cooked. Cooked, the leaves bring vitamin C for collagen and normal immune function, beta-carotene the body turns into vitamin A (better absorbed with a little oil or coconut milk), plus calcium, iron, and a little protein.
In yum phak-waan, blanched leaves meet fresh shrimp, minced pork, chili, lime, and fish sauce, with jasmine rice on the side. In kaeng liang, the leaves simmer in a peppery herbal broth with shallots, shrimp paste, and crab, usually with rice and a Thai omelet.
Growing tip: strip a mature branch bare and it pushes out a fresh flush of tender leaves. Whichever way you cook it, the rule holds — eat sweet leaf cooked in normal amounts and discard the raw juice.
Spicy Sweet Leaf Salad with Fresh Shrimp — ยำผักหวาน (yam-pak-waan)
Sweet Leaf Spicy Vegetable Soup with Crab Meat — แกงเลียงผักหวาน (gaeng-liang-pak-waan)
Food and nutrients
Rich in: vitamin C, vitamin A, calcium, iron, protein
Research context
Star gooseberry is a nutrient-dense leaf — but raw juice can be dangerous (see warning)
Sources
Source: SAFETY: Bunawan H et al. (2015). Sauropus androgynus-induced bronchiolitis obliterans. Evid Based Complement Alternat Med 2015:714158. DOI:10.1155/2015/714158. Outbreak: Lai RS et al. (1996), PMID 8676721
Narration transcript
Opening
Sweet leaf is a mild, faintly nutty Thai green with one hard rule: always cook it. Sweet leaf — ผักหวาน, pak-waan. Drinking large amounts of the raw juice has caused permanent lung damage in documented outbreaks, so cooks always blanch or simmer the leaves. You eat them only cooked, wilted into soups and stir-fries.
Spicy Sweet Leaf Salad with Fresh Shrimp (ยำผักหวาน)
For yam phak wan, this spicy salad tosses blanched sweet leaf with fresh shrimp, minced pork, chili, lime, and fish sauce, with jasmine rice on the side.
Sweet Leaf Spicy Vegetable Soup with Crab Meat (แกงเลียงผักหวาน)
In kaeng liang phak wan, a peppery herbal soup, the leaves simmer in a broth with shallots, shrimp paste, and crab, usually served with rice and a Thai omelet.
Nutrition summary
Cooked, these leaves are remarkably rich, a full day of vitamin C, plus generous calcium, vitamin A, and iron.
Vitamin C
Vitamin C is used to build collagen and helps protect cells from oxidative stress.
Vitamin A
Vitamin A contributes to normal vision and helps maintain healthy skin and surface tissues.
Calcium
Calcium is needed to maintain normal bones and teeth, supports normal muscle and nerve function, and contributes to normal blood clotting.
Iron
Iron is part of hemoglobin, the protein that carries oxygen in your blood, and it supports normal energy metabolism.
Protein
Protein contributes to the growth and maintenance of muscle, helps repair body tissues, and helps you feel full and satisfied.
Closing
Want more leaves? Strip a mature branch bare and it pushes out a fresh flush of tender growth. Whichever dish you cook, the rule holds: eat sweet leaf cooked, in normal amounts, and skip the raw juice entirely. Follow Longevity Biome, and LIKE this video for regular updates.
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