Chop the peppers, lemongrass, and carrots.
Add all the ingredients in a large mason jar.
Add the salt and water to cover the ingredients.
Cover and let ferment for roughly 5 to 7 days, burping the jar every day.
Once the ingredients are well fermented and bubbling, strain out the brine and add the ingredients to a blender.
Add a 1/2 cup of brine to the blender and blend at high speed.
Transfer the blended hot sauce to a wire mesh strainer and press out the liquid from the fibres into a sauce pan if you are heating the sauce to stop fermentation. Strain into a glass pitcher if leaving to ferment further and pour into your hot sauce bottle using a funnel.
Transfer the liquid into glass hot sauce bottles once the liquid has cooled.