Cure #1 vs Cure #2: Salt Curing Meat at Home

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Cure #1 and Cure #2 are the two food-safe curing salts that let you make bacon, sausage, jerky, and dry-cured meats at home. Both are mixtures of sodium nitrite (and, for Cure #2, sodium nitrate) with regular salt, dyed pink so they’re never confused with table salt. Choose the wrong one and your bacon is undercured (safety risk) or your salami won’t develop the right flavor over its 30+ day dry cure. Getting this right is the difference between confidently home-curing meat and cluttering your fridge with mystery packages you’re afraid to eat. This guide walks through what each curing salt is, when to use which, ratios, safety limits, and common home-curing applications for both.

What curing salts actually are

Cure #1 (Instacure #1, Prague Powder #1, Pink Salt #1)

• 93.75% sodium chloride (regular salt)
• 6.25% sodium nitrite (NaNO₂)
• Dyed pink to prevent confusion with table salt
• Also called “pink curing salt” or “tinted curing mix (TCM)”

Cure #2 (Instacure #2, Prague Powder #2)

• 89.75% sodium chloride
• 6.25% sodium nitrite
• 4% sodium nitrate (NaNO₃)
• Also dyed pink

How they work in meat

Nitrites (and nitrates that convert to nitrites) do several essential things:

• Kill Clostridium botulinum — the bacterium responsible for botulism. This is the primary safety function.
• Preserve pink/red color in cured meat (raw meat turns brown/gray without cures)
• Develop the characteristic “cured” flavor in bacon, ham, hot dogs, corned beef
• Extend shelf life by inhibiting bacterial growth

Sodium nitrate itself has no antimicrobial activity — it’s a slow-release reservoir of nitrite. Bacteria in the meat convert nitrate to nitrite over days-weeks, extending the curing action for long-cure products.

When to use Cure #1

Cure #1 is for products that will be COOKED or SMOKED to at least 145°F, and consumed within a reasonable timeframe (weeks to months):

• Bacon (cured then hot-smoked)
• Hot dogs and sausages that will be cooked before eating
• Ham (hot-smoked, wet-cured, or cooked)
• Beef jerky (hot-dehydrated)
• Corned beef (brine cure, then cooked before serving)
• Pastrami (cured, smoked, and cooked)
• Canadian bacon (cured pork loin, smoked)
• Andouille and other cooked sausages

Cure #1 rule of thumb: if the product gets cooked (145°F+) at any stage and eaten within 3-4 weeks, use Cure #1.

When to use Cure #2

Cure #2 is for products that are DRY-CURED (not cooked) and aged for 30+ days at cool temperatures:

• Dry-cured salami
• Prosciutto (dry-cured ham, aged 1-3+ years)
• Coppa (dry-cured pork shoulder, aged 2-4 months)
• Chorizo (dry-cured Spanish style, aged 4-8 weeks)
• Bresaola (dry-cured beef, aged 4-6 weeks)
• Genoa salami
• Country ham (aged 6+ months)
• Landjäger and other aged dried sausages

Cure #2 rule of thumb: if the product is aged 30+ days without cooking and eaten as-is, use Cure #2. The nitrate reservoir provides continuous curing action over weeks or months.

Why the distinction matters — do not swap

Using the wrong one is a safety problem, not just a flavor problem:

Using Cure #1 on dry-cured products (WRONG)

The nitrite dissipates too quickly (within days-weeks). During weeks/months of aging, C. botulinum can grow. Historical outbreaks of botulism from home-cured meats trace to insufficient nitrite/nitrate coverage during aging.

Using Cure #2 on cooked products (SUBOPTIMAL)

Not immediately dangerous but wasteful — the nitrate reservoir is unnecessary for cooked/consumed products and results in higher residual nitrates than needed. FDA regulations on cured meat products distinguish based on nitrite/nitrate use.

Standard curing ratios

Both Cure #1 and Cure #2 use the same ratio of 1 teaspoon (4-6 grams depending on packing) per 5 pounds (2.27 kg) of meat.

More precisely for professional use:

• Cure #1 ratio: 156 ppm sodium nitrite (or 0.25% cure by weight of meat)
• Cure #2 ratio: Same 156 ppm sodium nitrite + 156 ppm sodium nitrate max

Precise measurement matters — a kitchen scale in grams is essential. See our bacon curing guide for exact recipes.

Safety limits

The FDA sets maximum residual nitrite/nitrate limits in commercial products:

• Dry-cured products: 200 ppm nitrite max
• Cured/cooked products: 156 ppm nitrite max
• Nitrate: 500 ppm max in dry-cured products

These limits are why cure ratios matter. Over-curing doesn’t improve safety; it just adds unnecessary nitrites/nitrates and can cause off-flavors.

“Celery powder” and “natural” cures

Many “uncured” bacon and hot dog products at grocery stores use celery powder (which naturally contains high nitrate levels) instead of sodium nitrite/nitrate. Marketing calls them “uncured” or “no nitrites/nitrates added.” The reality: they contain naturally-occurring nitrates from celery that convert to nitrites during processing — often at HIGHER concentrations than added-cure products.

For home curing, celery powder can be used but requires precise measurement of nitrate content (variable batch to batch), a lag period for bacterial conversion, and specific technique. Purchasing Cure #1 or #2 is simpler, more predictable, and identical in food chemistry outcome.

Storing curing salts

• Shelf life: 3-5 years in cool, dry, dark storage
• Container: original packaging in tight-sealed outer container (moisture ruins effectiveness)
• Label prominently: “CURE #1 — POISON — DO NOT USE AS REGULAR SALT”
• Keep out of reach of children — a teaspoon of sodium nitrite is toxic if consumed directly
• Store separately from cooking salt to prevent confusion (the pink color is designed to help, but physical separation adds safety)

Home curing project examples

Bacon (Cure #1)

• 5 lb pork belly, skin-on or skinned
• 1 tsp Cure #1
• 2 tbsp kosher salt
• 2 tbsp brown sugar
• 1 tsp black pepper, plus optional flavor rubs
• Cure 7-10 days in fridge, rinsed and hot-smoked to 150°F internal

Beef jerky (Cure #1)

• 3 lb lean beef (round or flank), sliced 1/4″
• 3/4 tsp Cure #1
• Marinade: soy sauce, Worcestershire, garlic, pepper
• Marinate 24 hours, dehydrate at 165°F 4-6 hours

Dry-cured salami (Cure #2)

• 5 lb pork trimmings (70% lean, 30% fat)
• 1 tsp Cure #2
• Salt, spices, wine, starter culture (bactoferm)
• Stuffed into hog or beef casings, fermented 24-48 hours, dried 30-60 days at 55°F / 70% humidity

Corned beef (Cure #1)

• 4 lb beef brisket
• Wet brine: 1 gallon water + 2 cups kosher salt + 1 cup brown sugar + 2 tsp Cure #1 + pickling spices + garlic
• Cure 7-10 days in fridge
• Cooked (boiled or braised) before serving

Common mistakes

• Using Cure #1 for dry-cured products. Nitrite dissipates before aging completes = botulism risk.
• Using Cure #2 for cooked products. Unnecessary; adds residual nitrate.
• Eyeballing curing salt measurements. Use a scale — nitrite dosing matters.
• Mistaking Cure #1 for Himalayan pink salt. The colors look similar; consequences are very different. Read labels every time.
• Skipping the cure to “avoid nitrites.” Well-established food-safety necessity for cured meats. Celery powder-cured products contain the same or more nitrites through natural conversion.
• Rushing the cure time. Cure penetration takes days for large cuts. Rushed cure = uneven coverage = spoilage risk.

Cure #1 vs Cure #2 quick reference table

• Product cooked at any stage? Cure #1
• Product dry-aged 30+ days? Cure #2
• Bacon (hot-smoked): Cure #1
• Salami (dry-aged): Cure #2
• Beef jerky (dehydrated): Cure #1
• Prosciutto (dry-aged): Cure #2
• Corned beef (cooked): Cure #1
• Coppa (dry-aged): Cure #2
• Hot dogs (cooked): Cure #1
• Country ham (aged): Cure #2

Combining with other preservation

Cured meats often combine multiple preservation methods:

• Cure + smoke: bacon, kielbasa, andouille
• Cure + dehydrate: jerky, biltong
• Cure + dry-age: salami, prosciutto, coppa
• Cure + fermented: some dry-aged sausages use starter cultures for controlled fermentation before drying

Each method extends what curing alone provides. See our cold smoking vs hot smoking guide and beef jerky guide.

Recommended equipment and cures

• Prague Powder Cure #1 (Instacure #1) — for cooked/hot-smoked products (bacon, jerky, corned beef)
• Prague Powder Cure #2 (Instacure #2) — for dry-cured aged products (salami, prosciutto, coppa)
• Digital gram scale (0.1g accuracy) — essential for precise cure dosing
• Diamond Crystal kosher salt — the standard cooking salt for cure recipes
• Natural hog casings — for salami and dry-cured sausage projects

Related HFV topics

Curing and smoking family: how to cure and smoke bacon, cold vs hot smoking meat, beef jerky. Related preservation: canning meat and poultry, canning fish and salmon. Salt companion: pantry rotation for preserved foods.

Key takeaways

• Cure #1 (6.25% sodium nitrite) = COOKED products (bacon, jerky, hot dogs, corned beef).
• Cure #2 (6.25% nitrite + 4% nitrate) = DRY-AGED products aged 30+ days (salami, prosciutto, coppa).
• Ratio: 1 tsp per 5 lb meat for both. Use a gram scale for precision.
• Never swap them — Cure #1 in dry-aged products is a botulism risk; Cure #2 in cooked products is unnecessary/wasteful.
• Sodium nitrite/nitrate are food safety necessities for cured meats, not optional additives. “Uncured” celery-powder products contain the same nitrites via natural conversion.

FAQ

Can I make bacon without any curing salt? Technically yes with a “salt-cured” recipe using only regular salt + smoke, but the result is different: gray-colored, no cured flavor, shorter shelf life, and (importantly) some botulism risk if smoking temperature is low. The tiny amount of nitrite in Cure #1 provides safety and characteristic flavor that pure salt cannot replicate. Commercial “uncured” bacon still uses nitrites from celery powder — there’s no such thing as truly nitrite-free cured meat.

Are Cure #1 and Cure #2 dangerous? In pure form, yes — a few teaspoons of sodium nitrite is toxic to humans. That’s why they’re dyed pink and packaged in small quantities. In properly-dosed cured meat products (~156 ppm), they’re safe and have been used for 100+ years. Home curing at correct ratios is safer than eating uncured meat that develops bacterial contamination. Store both away from children and label clearly.

What’s the difference between pink Himalayan salt and pink curing salt? Different products with dangerously similar appearance. Pink Himalayan salt is just regular salt with trace minerals — safe for cooking, no antimicrobial properties. Pink curing salt (Cure #1 or #2) contains sodium nitrite/nitrate — never use it as regular seasoning salt. Read labels every time. Some brands intentionally use different pink shades to prevent confusion.