A shipment stopped at the Port of Los Angeles — not for failing a hygiene test, but because the system held no process registration for that jar of sauce. Only then did the maker learn that their chili sauce is, in US law, an “acidified food” whose process should have been filed before shipping. For Taiwanese sauces entering America, the first question is not localization of flavor. It is a chemistry question: what is your product’s pH?
pH 4.6: one line, two worlds
For shelf-stable sealed foods (cans, jars, retort pouches), FDA classifies on two numbers — pH 4.6 and water activity 0.85:
- pH ≤ 4.6: acidic enough that botulism cannot grow. Naturally fermented products (straight vinegars) see the lightest touch; products acidified down to 4.6 — most chili sauces, sweet-sour sauces, pickles — are Acidified Foods, and file their process
- pH > 4.6 and water activity > 0.85: Low-Acid Canned Foods, the botulism-risk zone with the strictest regime — oil-based and meat-bearing sauces (shacha, XO, minced-pork sauce) land here most easily
- Outside the game: refrigerated sauces skip the canned-food regime entirely, but the cold chain then never breaks — a different discipline (cold-chain services)
Never guess — lab-test pH and water activity; the report itself becomes your future conversation with FDA.
FCE and SID: the sauce-specific gates
Falling in scope adds two registrations: the FCE (plant-level canning establishment number, one per factory) and the SID (process-level filing — every product × container × sterilization process files separately, with pH and time-temperature schedules typically backed by a Process Authority). Change the packaging or recipe, refile the SID. Dry goods and biscuits never meet this gate — and sauce makers miss it more than any other, with detention at port the automatic price, however clean the factory. Filing is free; the process evaluation takes calendar time — start at recipe-lock, not after the US order lands.
Labels: three sauce-specific traps
The seven universal labeling errors have their own article; sauces add three: soy sauce quietly carries two allergens (wheat and soy) that must be declared; sesame — in oils, pastes and shacha — became the ninth mandatory allergen in 2023; and preservatives and colorings declare by individual name, never as a collective “seasoning.”
The shared food homework
Facility registration, Prior Notice per shipment, and the importer’s FSVP duties apply to sauces exactly as to all food — the walkthroughs live in the three-gates article and the FSVP article.
Where SKYCARGO fits
SKYCARGO INC checks the classification question first on every sauce project — pH tested, FCE/SID status confirmed (the factory files; we gatekeep), labels screened — then ships, clears and distributes. Tell us the products and packaging; rates on request. (Personal sauce shipments: Shiptw.)
FDA acidified and low-acid requirements follow current publications. Reference only.
