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Hot Sauce Guide to Storage, Safety and the pH 4.6 Line

The questions people ask about the bottle, answered with a number each.

A person in reading glasses turns a generic unlabeled hot sauce bottle in one hand at a grocery shelf, other plain bottles in red, green and amber lined up behind.
Short answer

Hot sauce is safe on the shelf when its pH sits below 4.6, its label lists ingredients by weight, and its heat rating is the maker's own figure.

  • Ingredients appear heaviest first: Cholula Original lists water before its 5.0 % chiles
  • Below pH 4.6, botulism bacteria cannot grow
  • Homemade and fermented sauces belong in the fridge
10 questions, one line each

What do people most want to know about hot sauce?

Most of them come back to two facts: the acid that keeps a sauce safe, and the air that dulls it once open.

  • Storage

    4 questions
    Does a bought bottle need the fridge?

    Not for safety if you bought it off a room-temperature shelf; the fridge slows darkening and flavor loss.13

    How long hot sauce keeps
    How long is an open bottle good?

    Cholula says best within 6 months, and fine after that while inside its Best By date.2

    Can I freeze it?

    Yes, out of the glass bottle: regular glass jars break easily at freezer temperatures.14

    Why is my sauce darker than when I bought it?

    Oxygen after opening fades color and flavor; Cholula says there is no health risk.2

  • Safety

    3 questions
    Does homemade sauce need the fridge?

    Yes. A ferment left warm keeps souring, and an uncanned sauce has no seal.15

    Three ways to make it
    What makes hot sauce safe?

    A pH below 4.6, where botulism bacteria cannot grow.10

    Why did the cap hiss when I opened it?

    Some sauces build up gas; Huy Fong asks you to open its bottles facing away from people.16

  • Label and heat

    3 questions
    What is in it, and how much?

    Ingredients are listed heaviest first, by law.4

    Why does some sauce stay smooth?

    Makers add a stabiliser; Cholula Original lists xanthan gum.1

    How hot is it?

    The SHU on the bottle is the maker's own figure, such as TABASCO Original Red at 2,500–5,000.3

The back of a generic hot sauce bottle with a plain paper label showing blank ruled lines where an ingredient list would be, a few red chiles and a small dish of salt beside it.
The back label

How do you read a hot sauce ingredient list?

Top to bottom, heaviest to lightest. Federal rules require ingredients in descending order of predominance by weight, so the first word tells you what most of the bottle is.4

  1. Water: first, so the heaviest ingredient (Cholula Original)14
  2. Chili peppers, árbol and piquín: 5.0 % of the ingredients1
  3. Salt, then spirit and cider vinegar1
  4. Spices, then xanthan gum as a stabiliser1
The safety line

What makes a hot sauce safe to keep?

Its acid. A hot sauce has to sit below pH 4.6, where botulism bacteria cannot grow; federal rules call a low-acid food brought to that line with added acid an acidified food.910

The pH scale runs from 0 (most acid) to 14; the line sits at 4.6.
On this page
  1. 1What does a short ingredient list tell you?
  2. 2How much salt is in a dash of hot sauce?
  3. 3What does the heat rating on a bottle mean?
  4. 4What do the dates on a bottle mean?
  5. 5When should you throw a bottle out?
  6. 6Checking the bottles you already own

What does a short ingredient list tell you?

It tells you what most of the bottle is, and often why it rates the heat it does. Read top to bottom, Cholula Original is mostly water with 5.0 % chiles1, which helps explain why its maker rates it at only 1,000–2,000 SHU2. Compare TABASCO Original Red, whose maker names just three things: aged red peppers, salt and distilled vinegar3.

A short list tells you what the maker added and nothing about quality. Cholula names its xanthan gum a stabiliser1, and a thickener that low on the list means the maker added only a little of it. Every ingredient sits in order of weight, so you can rank anything on the list against its neighbors4.

Two more clues sit in the list. The acid named hints at the style: TABASCO uses distilled vinegar3, while Cholula blends spirit and cider vinegar for its Mexican table sauce1. And a list that opens with peppers rather than water tells you peppers outweigh everything else in the bottle.

How much salt is in a dash of hot sauce?

Usually little, because you use so little of it at a time. USDA's FoodData Central puts a generic hot pepper sauce at 2,640 mg of sodium per 100 g and weighs one teaspoon at 4.7 g, so that teaspoon holds about 124 mg of sodium5.

about 124 mgsodium in 1 teaspoon (4.7 g) of generic hot pepper sauce5
about 30 mgsodium in 1 teaspoon of TABASCO pepper sauce, at 633 mg per 100 g6
about 138 mgsodium in 1 teaspoon (6.5 g) of sriracha, at 2,120 mg per 100 g7
under 2,300 mgthe Daily Value for sodium8

Worked out, 124 ÷ 2,300 is about 5 % of the Daily Value, and the FDA calls 5 % DV or less per serving low8. The thicker sriracha lands near 6 % per teaspoon because its teaspoon weighs more7.

The catch is the pour, not the bottle. Shake a full tablespoon, three teaspoons, of the generic sauce over your wings and you have added about 370 mg, roughly 16 % of the day's limit. If you watch sodium, the label's serving size and your own spoon tell you more than the style does.

What does the heat rating on a bottle mean?

The number you see is the maker's own Scoville figure, printed as a range, a floor or a single number, and many bottles print none at all. TABASCO prints a range for each sauce, from 600–1,200 SHU for its Green Jalapeño to 23,000–33,000 SHU for its Scorpion3.

Ranges overlap more than names suggest. Cholula Original at 1,000–2,000 SHU2 and TABASCO Buffalo Style at 1,200–2,400 SHU3 share most of their span, so on a given day either one could taste hotter to you. The hot sauce Scoville scale puts every rated bottle on one chart and explains each format, including the 1–10 scales some sellers use.

What do the dates on a bottle mean?

They tell you about quality, and the maker decides how long that lasts. Cholula prints a Best By date and a lot code on every bottle made since mid-2018; older bottles carry a Julian date code instead2.

  1. 1

    Find the Best By date

    Look on the neck or the back label. Cholula says not to use a bottle without a clear Best By date.2

  2. 2

    Write the opening date on the cap

    Cholula says its sauce is best within 6 months of opening, and still fine past that while it stays inside its Best By date.2

  3. 3

    Check the color and smell

    A darker color after months open comes from oxygen; Cholula says that carries no health risk, only a change in flavor.2

Other makers set their own windows, so you treat the Cholula figures as one maker's rule for its own sauce. For every other kind, from bought bottles to homemade ferments, you can compare how long each one keeps side by side.

When should you throw a bottle out?

When it shows spoilage, or when it is homemade and you cannot say how it reached a safe pH. A bought, sealed sauce made to sit at pH 4.6 or below9 is the safest bottle in your fridge door; a homemade one is only as safe as the recipe behind it10.

Which bottle?Start from where the sauce came from
  • store-bought
    Bought off a shelfMade to sit at pH 4.6 or below; check the Best By date
  • sealed at home
    Home cannedBulging lid, spurting liquid, odd smell or mold: do not taste it
  • not canned
    Homemade, kept coldFridge or freezer only; use it relatively quickly unless fermented

Is this bottle still good? The question to ask depends on where it came from

For a home-canned jar, NCHFP lists the signs: a lid that has lost its vacuum, streaks of dried food from the top of the jar, rising bubbles, an unnatural color or smell, spurting liquid and cotton-like mold in white, blue, black or green11. If you see any of them, do not taste the sauce, not even a drop.11

A homemade fridge sauce is simpler: Ohio State asks you to keep a sauce you did not can in the fridge or freezer and use it relatively quickly12. A ferment keeps longer in the cold, and the fermented hot sauce page shows how to tell harmless film from mold.

Checking the bottles you already own

Pull every bottle out of your fridge door and cupboard and give each one the same three looks. You can do the whole shelf in about the time it takes a kettle to boil.

  • Read the first two ingredients: water or peppers first tells you how strong the pour runs.4
  • Read the Best By date, and write today's date on any cap you open for the first time.2
  • Look for mold, a bulging cap or a sour, rotten smell on homemade bottles, and bin any that show one.11

What survives the check goes back in the order you reach for it. If a homemade bottle has no date and no record of how you made it, our habit is to let it go and make the next batch from a tested route.

Sources

· 16
  1. 1Cholula (manufacturer, own product; Singapore product page) Cholula Originalchecked Oct 18, 2026
  2. 2Cholula (manufacturer, own product) FAQchecked Oct 18, 2026
  3. 3McIlhenny Company (manufacturer, own products) TABASCO Original Red Sauce (includes the TABASCO Scoville Chart)checked Oct 18, 2026
  4. 4U.S. Code of Federal Regulations, 21 CFR 101.4 (via Cornell LII) Food; designation of ingredientschecked Oct 18, 2026
  5. 5USDA Agricultural Research Service, FoodData Central (SR Legacy) Sauce, ready-to-serve, pepper or hot (FDC ID 174527)checked Oct 18, 2026
  6. 6USDA Agricultural Research Service, FoodData Central (SR Legacy) Sauce, ready-to-serve, pepper, TABASCO (FDC ID 174528)checked Oct 18, 2026
  7. 7USDA Agricultural Research Service, FoodData Central (SR Legacy) Sauce, hot chile, sriracha (FDC ID 171186)checked Oct 18, 2026
  8. 8U.S. Food and Drug Administration Sodium in Your Dietchecked Oct 18, 2026
  9. 9U.S. Code of Federal Regulations, 21 CFR 114.3 (via Cornell LII) Acidified foods: definitionschecked Oct 18, 2026
  10. 10SDSU Extension How to Make a Safe Hot Sauce (Curtis Braun)2023 · checked Oct 18, 2026
  11. 11National Center for Home Food Preservation (University of Georgia) Identifying and Handling Spoiled Canned Foodchecked Oct 18, 2026
  12. 12Ohio State University Extension (CFAES) HYG-5365: Food Preservation: Making and Preserving Barbecue and Hot Sauces2024 · checked Oct 18, 2026
  13. 13University of Georgia (UGA Today), quoting Carla Schwan, Extension food safety specialist Food safety specialist chimes in on condiment storage2025 · checked Oct 18, 2026
  14. 14National Center for Home Food Preservation (University of Georgia) Containers for Freezingchecked Oct 18, 2026
  15. 15K-State Research and Extension MF3491: Taking a New Look at Fermented Foods (Donna Krug)2020 · checked Oct 18, 2026
  16. 16Huy Fong Foods (manufacturer, own products) Productschecked Oct 18, 2026
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