Salt curing a ham is a straightforward preservation method that relies on drawing moisture out of the meat to create an environment where bacteria cannot thrive. The process takes weeks to months depending on the size of your ham, but the hands-on work is minimal. What matters most is getting the salt ratio right, keeping temperatures consistently cold, and being patient enough to let time do the work.
Why Salt Curing Works
When you pack salt onto raw pork, sodium and chloride ions bind to the water molecules in the meat, making that water unavailable to microorganisms. This is called reducing “water activity.” At the same time, the high salt concentration on the surface causes bacterial cells to lose their internal water through osmosis, which kills them or stops them from multiplying. A water-phase salt content of 10% or higher inhibits the most dangerous pathogen in cured meats, Clostridium botulinum. For shelf-stable products stored without refrigeration, 20% water-phase salt is the recognized safety threshold.
Choosing Your Curing Salt
You need two ingredients: regular salt (non-iodized kosher or sea salt works best) and a curing salt that contains nitrite and nitrate. For a long-cured country ham, use what’s sold as Cure #2 (also called Prague powder #2). It contains 6.25% sodium nitrite, 4% sodium nitrate, and about 90% regular salt. The nitrite provides immediate protection against botulism and gives cured ham its characteristic pink color. The nitrate acts as a slow-release reservoir, gradually converting into nitrite over the weeks and months of aging.
Cure #1 (Prague powder #1) contains only nitrite with no nitrate. It’s designed for quick cures like bacon or smoked sausage, where the meat will be cooked and eaten within days. For a ham that will hang for months, Cure #2 is the correct choice. The USDA limits nitrite in the finished product to 200 parts per million, and following the manufacturer’s recommended rate on the package keeps you well within that range.
Preparing the Ham
Start with a fresh, bone-in hind leg from a butcher or whole-animal processor. The skin can be left on or trimmed to a thin fat cap, depending on your preference. A typical fresh ham weighs between 12 and 20 pounds. Weigh it precisely, because every calculation that follows depends on that number.
Make sure the meat is thoroughly chilled to 32–38°F before you begin. Cold meat absorbs salt more evenly, and starting at refrigerator temperature is essential for safety. If there’s a exposed bone end (the aitch bone area), pay special attention to working salt into that spot. Bone joints are where spoilage starts because salt penetrates bone surroundings more slowly than muscle tissue. Some curers make a small cut near the joint to pack extra cure into the cavity.
Mixing and Applying the Cure
A traditional dry-cure mix for country ham combines kosher salt, Cure #2, and brown sugar or white sugar. A common ratio is about 8 pounds of salt, 2 pounds of sugar, and 2 ounces of Cure #2 per 100 pounds of meat. For a single 15-pound ham, that scales down to roughly 1.2 pounds of salt, 5 ounces of sugar, and a scant third of an ounce of Cure #2. Mix these together thoroughly so the pink curing salt distributes evenly.
Rub the cure mixture over every surface of the ham, pressing it firmly into the lean areas, the bone end, and the hock. Lean meat absorbs salt faster than fat, so the fat side needs a generous coating as well. Place the ham on a clean rack or in a food-safe container, skin side down, and pack any remaining cure on top. Some curers wrap the ham loosely in cheesecloth or butcher paper to hold the salt in place.
Equilibrium Curing as an Alternative
If you want more precise salt control and less risk of an overly salty result, equilibrium curing uses a measured amount of salt based on the exact weight of the meat. You apply 2% of the ham’s weight in salt (so 4.8 ounces for a 15-pound ham) plus the appropriate Cure #2, seal it in a bag or wrap it tightly, and let it cure in the refrigerator. The meat can only absorb the salt you’ve provided, so it’s nearly impossible to over-salt. The trade-off is that equilibrium curing takes longer for thick cuts because you’re relying on diffusion rather than excess salt driving moisture out aggressively.
Curing Time and Temperature
For a traditional dry-box cure, the standard rule from university extension programs is 2.5 days per pound of ham. A 15-pound ham needs a minimum of 37 to 38 days. A 20-pound ham needs 50 days. Do not shortcut this timeline. Salt penetrates large muscle groups slowly, and the center of the ham needs the full duration to reach a safe concentration.
Temperature during the entire curing phase must stay between 36°F and 40°F. A dedicated refrigerator, an unheated garage in winter, or a cold cellar can work, but you need a reliable thermometer monitoring the space. If temperatures rise above 41°F for extended periods, bacteria can grow in the interior before the salt reaches it. If temperatures drop below freezing, salt penetration slows dramatically because the water in the meat isn’t mobile enough to carry ions inward.
About halfway through the curing period, check the ham. If liquid has pooled, drain it. You can “overhaul” the ham by rubbing in a fresh, lighter application of cure mix and repositioning it. This helps ensure even salt distribution, especially on thicker sections.
Washing, Soaking, and Drying
When the curing time is complete, unwrap the ham and brush off all excess cure and any surface mold with a stiff brush. Mold at this stage is normal and not dangerous. Rinse the ham under cool water.
If you plan to cook the ham relatively soon after curing, soak it in cool water for 4 to 8 hours to pull out excess surface salt. For hams that have been aged longer, soak up to 24 hours, changing the water after 10 hours. This step makes a meaningful difference in how salty the final product tastes. You can skip soaking if you intend to age the ham further and will soak before cooking later.
After soaking or rinsing, let the ham dry in a cool, well-ventilated space. Pat the surface with clean towels and allow it to air-dry until a thin, slightly tacky skin called a pellicle forms. This usually takes 24 to 48 hours in a space around 45–50°F with good airflow.
Aging and Hanging
Aging is what transforms a salt-cured ham from merely preserved meat into something with deep, complex flavor. After the initial cure and drying phase, the ham moves through a gradual temperature and humidity progression.
Start by hanging the ham in a space around 45–50°F with roughly 80% relative humidity for two to four weeks. This allows the surface to firm up and continue drying without losing moisture too fast (which causes a hard rind to form while the interior stays wet, a defect called “case hardening”). After this initial period, the ham can move to a warmer space, around 65–70°F, with lower humidity for the long aging phase.
Traditional American country hams age for a minimum of six months, and many producers age for 12 to 18 months. European-style hams like prosciutto and jamón commonly age for 12 to 36 months. The longer the aging period, the more concentrated the flavor becomes as the ham continues to lose moisture. A ham that started at 15 pounds may weigh 10 pounds or less after a year of aging.
During aging, expect to see mold develop on the surface. White and green molds are typical and are simply wiped or brushed off periodically. Black mold or any off-putting ammonia smell is a sign something has gone wrong. A properly cured ham smells nutty and meaty, never foul.
Smoking (Optional)
Many country ham traditions include a cold-smoking step after the initial cure and before long aging. Cold smoking means the ham is exposed to smoke at temperatures below 64°F, so the meat isn’t cooking. This adds flavor and creates an additional antimicrobial layer on the surface. Hickory, apple, and oak are common wood choices. Smoking typically lasts anywhere from a few days to two weeks, depending on the intensity of smoke flavor you want. If you don’t have a cold-smoking setup, you can skip this step entirely and still produce a fully safe, delicious cured ham.
Cooking a Salt-Cured Ham
A fully aged country ham is technically safe to eat uncooked (like prosciutto), provided it has been cured and aged long enough for the water activity to drop below safe thresholds. Most American country hams, however, are traditionally cooked before serving.
After the long soak to remove excess salt, place the ham in a large pot or roasting pan, cover with fresh water, and simmer at around 180–190°F (not a full boil, which toughens the exterior). Cook until the internal temperature reaches 160°F, which takes roughly 20 to 25 minutes per pound for a whole ham. After simmering, many cooks glaze the ham with brown sugar or mustard and finish it in a 375°F oven for 15 to 20 minutes to caramelize the surface.
Slice a salt-cured ham extremely thin. The flavor is intense and concentrated, so paper-thin slices served on biscuits, with fruit, or alongside sharp cheese is the traditional way to enjoy the months of work that went into it.