For most whole-muscle curing, you need 2% to 3% salt by the weight of the meat. A widely used sweet spot is 2.25%, which means about 10 grams of salt for every pound of meat. That percentage balances flavor, texture, and preservation without making the finished product taste overly salty. The exact amount shifts depending on whether you’re dry curing, wet brining, or planning a long-term project like prosciutto or bresaola.
Equilibrium Curing: The Most Reliable Method
Equilibrium curing is the method most home curers rely on because it’s forgiving. You weigh your meat, calculate a percentage of that weight in salt, apply it, and seal everything in a bag or container. The salt slowly distributes evenly through the meat until it reaches equilibrium, meaning the meat can only absorb the amount you added. There’s no risk of over-salting, even if you leave it a day or two longer than planned.
For dry equilibrium curing, the standard range is 2% to 3% of the meat’s weight in sea salt or kosher salt. At 2.25%, a 5-pound pork belly (about 2,270 grams) would get roughly 51 grams of salt. You rub it on, vacuum-seal or tightly wrap the meat, and refrigerate. For wet equilibrium brining, where the meat sits submerged in salted water, the target drops slightly to 1.2% to 1.8% of the combined weight of meat plus water, with 1.5% as a reliable starting point.
Why You Should Weigh, Not Measure
Volume measurements are unreliable for curing. A tablespoon of standard table salt weighs 23 grams, a tablespoon of Morton kosher salt weighs 16 grams, and a tablespoon of Diamond Crystal kosher salt weighs just 10 grams. That’s more than a twofold difference. If a recipe calls for “one tablespoon per pound” and you swap salt brands, you could end up with a product that’s either dangerously under-salted or unpleasantly salty.
A kitchen scale that reads in grams eliminates the guesswork. Weigh the meat, multiply by your target percentage (0.0225 for 2.25%), and weigh out that amount of salt. This takes 30 seconds and removes the single biggest source of error in home curing.
When You Need Curing Salt (Pink Salt)
Regular salt handles preservation in many projects, but certain cures also require curing salt, a specially formulated mix that contains sodium nitrite. Nitrite prevents the growth of dangerous bacteria, particularly the kind that causes botulism, and gives cured meats their characteristic pink color and tangy flavor. Without it, products like bacon, corned beef, and cured sausages would be both unsafe and taste different than you’d expect.
Prague Powder #1 (also called pink curing salt #1) is 6.25% sodium nitrite mixed with 93.75% regular salt. It’s dyed pink so you never confuse it with table salt. The standard dosage for home curing is 0.25% of the meat’s weight, calculated separately from your sea salt or kosher salt. So for that same 5-pound pork belly, you’d use about 5.7 grams of Prague Powder #1 in addition to your regular salt. USDA regulations cap nitrite levels for commercial products at 120 to 200 parts per million depending on the method, and the 0.25% guideline keeps home projects well within that safety range.
Prague Powder #2 contains sodium nitrate in addition to nitrite. The nitrate slowly converts to nitrite over weeks and months, providing long-lasting protection for products that hang and dry for extended periods, like salami, coppa, or prosciutto. If your project will take more than about 30 days, Prague Powder #2 is the right choice. For anything shorter (bacon, pastrami, corned beef), Prague Powder #1 is all you need.
How Long Curing Takes
Curing time depends on thickness, not total weight. The general rule is seven days per inch of thickness at the thickest point. A bacon belly that’s two inches thick needs about 14 days. A ham that’s five inches through the thickest section needs around 35 days. Some older formulas use 11 days per inch for immersion cures, which adds a wider safety margin for large, dense cuts.
Equilibrium curing in a sealed bag at refrigerator temperatures (36°F to 40°F) is more predictable than traditional methods where meat sits in a salt box. You can feel the meat to check progress: it should be firm throughout, with no soft or squishy spots in the center. Flipping the bag every day or two helps the brine redistribute evenly.
Temperature and Humidity for Dry-Cured Projects
If you’re making something that hangs to dry after the initial salt cure, like bresaola or lonza, the environment matters as much as the salt ratio. The target is around 55°F to 60°F with 65% to 70% relative humidity. Too warm and bacteria multiply too quickly. Too dry and the outside of the meat hardens into a shell (called case hardening) that traps moisture inside, creating conditions for spoilage at the core.
Many home curers use a converted refrigerator or wine cooler with a small humidifier and a temperature controller. The meat typically loses 30% to 35% of its original weight during drying, which concentrates flavor and drops water activity low enough to make the product shelf-stable. The FDA notes that botulism-causing bacteria cannot grow when water activity falls below 0.93, and a properly dried whole-muscle cure finishes well below that threshold.
Quick Reference by Project
- Bacon (dry cure): 2% to 2.5% sea salt plus 0.25% Prague Powder #1, rubbed on and refrigerated 7 to 14 days depending on thickness.
- Corned beef or pastrami (wet brine): 1.5% salt plus 0.25% Prague Powder #1, calculated on the combined weight of meat and water. Brine for 5 to 7 days for a 3- to 4-inch brisket flat.
- Bresaola or lonza (dry cure then hang): 2.5% to 3% sea salt plus 0.25% Prague Powder #2, cure under refrigeration for 7 to 14 days, then hang at 55°F to 60°F and 70% humidity until 30% to 35% weight loss.
- Duck breast prosciutto: 2.25% sea salt plus 0.25% Prague Powder #2, cure 7 days, hang 2 to 3 weeks.
In every case, weigh the meat first, do the math, and weigh the salt. Precision is what separates a perfectly balanced cure from one that’s too salty or, worse, not salty enough to be safe.