Pepper Heat Is Measured in Scoville Units
Scoville Heat Units quantify capsaicin concentration. Understanding the scale helps you build a sauce with intentional heat rather than guessing by variety name. Most single-variety fermented sauces sit between 1,000 and 100,000 SHU. Blending peppers gives you precise heat control without sacrificing fermentation character.
1,000to 5,000 SHU
30,000to 50,000 SHU
100,000to 350,000 SHU
1,000,000Plus SHU
Choose a Base Pepper
Your base pepper should be 60 to 80 percent of total weight. Choose Jalapeño for grassy brightness, Cayenne for clean heat, or Habanero for fruity intensity. Use fresh, unblemished peppers with no soft spots.
Add Aromatics for Depth
Up to 20 percent of your blend can be garlic, carrot, or mango. Garlic adds savory depth, carrot sweetens and thickens, mango adds tropical character. All aromatics must stay below the brine line throughout fermentation.
Pepper Sourcing and Prep Checklist
Fresh, firm peppers with no soft spots or signs of mold
Stems removed (seeds kept for heat, removed for milder result)
Organically grown preferred — fewer surface pesticides means better fermentation
Total pepper weight measured before salting
Gloves worn if handling habanero or hotter varieties
Roasted Peppers Do Not Ferment Heat destroys Lactobacillus. Raw peppers ferment. Roasted, smoked, or otherwise cooked peppers have no viable bacteria and will not undergo lacto-fermentation. If you want a smoked hot sauce, ferment raw peppers first and introduce smoke or smoked salt after blending.
Adjusting Heat After Fermentation
Fermentation mellows pepper heat slightly as capsaicin binds with other flavor compounds during the process. Your blended sauce will taste less hot than the raw pepper did mid-ferment. Add fresh unfermented pepper during blending if you need more heat. Add reserved fermented brine to deepen sourness without changing the texture.
"A good fermented hot sauce improves every week in the bottle for the first month. Patience compounds.
"KaiRenner26th of April 2026
