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Anchovies are salted on the boat deck as soon as they are caught, then packed into large wooden barrels on Phú Quốc island, drained, pressed and left to ferment naturally for 12 to 15 months. The liquid is drawn off and poured back until it runs clear, then blended with weaker brine extracts and bottled on the island by grade of nitrogen.
Fully documentedSauces and condiments12 months – 15 monthsPDO (EU, 2012)
Recipe
Amounts from a sourceThe PDO single document gives no fish-to-salt ratio. A news feature reports about 3 parts fish to 1 part salt at the Masan barrel house on Phú Quốc and says the traditional ratio under the geographical indication is 2.5 to 3 parts fish to 1 part salt.
Fresh anchovies (cá cơm)About 3 parts by weight
Other species may not exceed 15 % of the catch[pdo][daibieu]
SaltAbout 1 part by weight
The geographical-indication rules regulate where the salt comes from and how it is stored before use; one producer, Masan, chooses salt from Bà Rịa–Vũng Tàu to avoid astringent or bitter components[daibieu]
Total time across the recorded steps: 12 months – 15 months
Start
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What changes:Salt mixed into the fresh anchovies on deck starts to draw water out
Step 1 of 7
Sort, wash and salt the catch on deck
Time
Not documented
Temperature
Not documented
Salt
25–28.6 %
Reported
Acidity
Not documented
Fishers pick out other species by hand and wash the anchovies in sea water. Salt is mixed in with wooden tools so the fish are not damaged. Output: salted anchovies.
Flavour
Not documented
Texture
Not documented
Colour
Not documented
Microbes at work in this step
Not documented for this step.
Method
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
At a glance
Anchovies are salted on the boat deck as soon as they are caught, then packed into large wooden barrels on Phú Quốc island, drained, pressed and left to ferment naturally for 12 to 15 months. The liquid is drawn off and poured back until it runs clear, then blended with weaker brine extracts and bottled on the island by grade of nitrogen. Made in 7 steps over 12 months – 15 months. The longest step, ferment in the barrel, takes 12–15 months (Single document 'Phú Quốc' 2009) and runs at 27.5 °C (Single document 'Phú Quốc' 2009). Salt is 25–28.6 % (Đại biểu Nhân dân). Clostridium does most of the fermenting.
Phú Quốc sauce ferments in wooden barrels rather than concrete tanks and is drawn off and poured back until it runs clear. The PDO sets five grades from 20 to 40 g N per litre, well above the Codex floor of 10 g/L, and requires bottling on the island.
Long extracts 1, 2 and 3Weaker sauces washed out of spent fish with saturated brine, used for blending.
Phan Thiết and Cát Hải fish saucesThe PDO names these as other Vietnamese fish sauces whose character differs from Phú Quốc; they are outside the Phú Quốc PDO.
Safety
The PDO sets salt at 250–295 g/L, histamine at 200 mg/L or less and lead at 0.5 mg/L or less. Codex caps fish sauce at 40 mg histamine per 100 g. The PDO has the anchovies cleaned and salted on the boat deck right after the catch, and bottled sauce is stored in a roofed storehouse in natural weather conditions.
Hazards the sources name: Histamine (the PDO caps it at 200 mg/L).
Vietnam applied to register Phú Quốc in the EU in 2009, and the name was entered as a protected designation of origin by Commission Implementing Regulation (EU) No 928/2012 of 8 October 2012.