作法
- 寬鍋中把高湯煮至微滾。攪入羅望子醬；湯轉混濁琥珀色。
- 加鳳梨、番茄與芋莖。煮10分鐘——水果蔬菜應軟並貢獻甜酸予湯。
- 以魚露與糖調味。試味——應先強烈酸、後鹹、鳳梨甜味在底下流動。視需要加羅望子增酸。
- 魚塊小心放入。煮4分鐘——魚肉一變白即離火。煮過頭會乾。
- 魚煮的同時炸大蒜：小鍋加熱油，蒜末炸60秒至淡金。顏色不應超過琥珀——焦蒜會苦。
- 離火後加秋葵與豆芽至湯中。撒香草（越南香草、刺芹）與辣椒。把蒜油淋在頂部。立即配飯上桌；canh chua是南越多菜家庭餐的湯，極少作為桌上唯一料理。
Common questions
Can 越南酸魚湯 be made ahead?
越南酸魚湯 is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 25 minutes.
Is 越南酸魚湯 spicy?
越南酸魚湯 as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is 越南酸魚湯 vegetarian or gluten-free?
This recipe is suitable for most diets. If you have specific restrictions, the substitutions section in each ingredient note covers the most common swaps.
How hard is 越南酸魚湯 to make at home?
越南酸魚湯 is approachable for a home cook with basic stove skills — total time about 45 minutes, no special technique required.
Can 越南酸魚湯 be scaled up or down?
This recipe is written for 4 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
文化背景
Canh chua屬於湄公三角洲——河魚與羅望子湯是當地人在悶熱濕度中喝的消暑物。越南香草（ngo om）是南越招牌；那檸檬孜然調在北越烹飪完全不出現。這道菜永遠是餐的一部分，配蒸飯與其他菜餚；在西貢家庭點canh chua當主菜會被當外國人。
