How It Was Cured (Reference)
After this you can You can answer a guest who asks about nitrites without repeating a myth, and you understand what the curing chamber is doing: enough to know when to hand the question to the chef rather than answer it.
Pink Salt, Nitrite & Nitrate (The Science, Straight) Charcuterie Atlas
CURE #1 (pink salt, 6.25% sodium nitrite): for short cures and anything smoked or cooked: bacon, pastrami, sausages; nitrite blocks Clostridium botulinum, fixes the rosy color, and builds 'cured' flavor. CURE #2 (nitrite + nitrate): for long dry cures; the nitrate is a time-release reservoir that bacteria slowly convert to nitrite over months of salami and ham aging. Both are dyed pink to prevent tragic salt mix-ups and used in grams per kilo, weighed on a scale, never eyeballed. 'Uncured' supermarket bacon uses celery-powder nitrate, the same chemistry wearing a garden costume. Respect the numbers and this is settled, safe science; wing it and it is the one place in cooking where confidence can genuinely hurt someone.
Casings, Molds & the Curing Chamber Charcuterie Atlas
CASINGS: natural (hog, sheep, beef middles; the snap and the breathability tradition prefers), collagen (uniform, beginner-friendly), and inedible synthetics for large formats. The WHITE MOLD on good salami (Penicillium nalgiovense, applied on purpose) is a bodyguard: it shields against bad molds, moderates drying, and adds a mushroomy finish (green or black fuzz is the enemy; wipe with vinegar or discard). The CHAMBER is the craft's climate: ~12–15°C and 70–80% humidity with gentle air: a wine fridge with a humidity controller is the modern apprentice's cave. CASE HARDENING, a dried shell trapping a wet center, is the classic failure; humidity, not speed, prevents it. Weight loss (30–40% for most salami) is the honest doneness test, so weigh at hanging and write the date on everything.