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Sauces and condiments from Louisiana, USA

Barrel-aged pepper mash hot sauce (Louisiana style)

Ripe hot peppers are ground with a little salt into a mash and left in barrels for weeks to years while lactic bacteria and yeasts slowly sour it. The aged mash is then blended with vinegar, strained and bottled. Louisiana State University studies followed such mashes in oak and plastic barrels for up to two years.

Fully documentedSauces and condiments42 days – 3.1 years

Recipe

Amounts from a sourceThe amounts are the salt levels of one LSU barrel study; makers do not publish fixed recipes, and Tabasco says only that a small amount of salt is used.
Ripe red hot peppersTabasco peppers (C. frutescens) in the LSU barrel studies[koh2005]
Salt6–10 % saltThe three levels tested; 8 % in oak gave the most stable sauce[awad1986]
VinegarBlended with the aged mash; white wine vinegar in the original Tabasco recipe, distilled vinegar today[bernard2013]
Starterspontaneous

Total time across the recorded steps: 42 days – 3.1 years

Start
Drag the bar or press Play

What changes: Starting material: ripe red hot peppers

Step 1 of 6
Pick ripe red peppers
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Lactic acid bacteria
Yeasts

Output: ripe hot peppers.

Flavour
Not documented
Texture
Not documented
Colour
deep red

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

Ripe hot peppers are ground with a little salt into a mash and left in barrels for weeks to years while lactic bacteria and yeasts slowly sour it. The aged mash is then blended with vinegar, strained and bottled. Louisiana State University studies followed such mashes in oak and plastic barrels for up to two years. Made in 6 steps over 42 days – 3.1 years. The longest step, age the mash, takes 14 days – 3 years (Watts E.G 2018). Salt is 6–10 % (Awad A.R. 1986). Lactic acid bacteria and Yeasts, living alongside the lactic bacteria through the ferment do most of the fermenting.

Key numbers
Main step14 days – 3 yearsReported[watts2018][awad1986][koh2005]Age the mash
Salt6–10 %Reported[awad1986]Grind with salt

What makes this one different

The pepper is fermented as a salted mash in barrels, for 2 weeks up to 3 years, and the vinegar is blended in only afterwards, before straining. LSU tested 6, 8 and 10 % salt, while Tabasco says only that it uses a small amount. Tabasco is the best-known maker; this entry covers the general method that LSU studied.

Related ferments

Variants

  • Tabasco (McIlhenny Company)Mash aged up to three years in used white-oak bourbon barrels under a salt cap, then blended with distilled vinegar for 28 days.

Safety

Tabasco says the salt seal on its barrels forms a natural protective barrier and lets fermentation gas out, but its page shows no test of that. In an 18-month LSU study the mash's pH fell significantly as its acid content rose. The Minnesota Department of Agriculture lists hot sauces among common acidified foods, which are low-acid foods with added acid brought to a finished equilibrium pH of 4.6 or below. A mash or sauce above that pH is still low-acid, the kind of food CDC says is commonly linked to botulism, so a sealed home batch needs a pH meter reading of 4.6 or lower.

History and sources

Every number is labelled with how it is known. How this atlas is made

Edmund McIlhenny's first sauce mash aged thirty days in crockery jars and barrels, then aged at least another thirty days with French white wine vinegar. His first commercial pepper crop was in 1868 and he sold his first bottle in 1869. Stoneware jars were first used to age the mash, and by 1900 McIlhenny Company used only white oak barrels. Today the mash ages up to three years in them.

  1. [awad1986] Awad A.R. 1986, Chemical and physical characteristics of pepper mash and hot pepper sauce, PhD dissertation, Louisiana State University (abstract)paper
  2. [koh2005] Koh F.M. 2005, Physicochemical properties of pepper mash fermented in wood and plastic, MS thesis, School of Nutrition and Food Sciences, Louisiana State University (abstract)paper
  3. [watts2018] Watts E.G., Janes M.E., Prinyawiwatkul W., Shen Y., Xu Z., Johnson D. 2018, Microbiological changes and their impact on quality characteristics of red hot chilli pepper mash during natural fermentation, International Journal of Food Science and Technology 53(8):1816–1823, doi:10.1111/ijfs.13792 (abstract)paper
  4. [mcilhenny-barrels] McIlhenny Company 2019, About our barrels (TABASCO brand blog)web
  5. [bernard2013] Bernard S.K. 2013, Tabasco Sauce, 64 Parishes (Louisiana Endowment for the Humanities), updated 2023web
  6. [mda-acidified] Minnesota Department of Agriculture, Acidified Foods (guidance page)gov
  7. [wp] Wikipedia, Tabasco sauce (outline only)wiki
  8. [cdc-botulism] US Centers for Disease Control and Prevention, Botulism Prevention (updated 26 February 2026)gov