Smoking a ham that is already cooked might seem redundant to the uninitiated, but seasoned grill masters know that this is the secret to elevating a standard grocery store find into a holiday masterpiece. While a pre-cooked ham is technically safe to eat right out of the package, a “double-smoked” ham introduces layers of wood-fired complexity, a tacky mahogany glaze, and an internal succulence that an oven simply cannot replicate. The primary challenge lies in the timing. Since you aren’t cooking the meat to reach a safe temperature from a raw state, your goal shifts entirely to reheating the ham without drying it out.
Understanding the timeline and the variables involved is the difference between a juicy, flavorful centerpiece and a salty, leathery disappointment. This guide breaks down exactly how long to smoke a pre-cooked ham, the best temperatures to use, and the professional techniques required to ensure every slice is as tender as the last.
Understanding the Pre Cooked Ham Landscape
Before you fire up the pellet grill or offset smoker, you need to know what kind of ham you are working with. Most hams found in the meat aisle are labeled as “fully cooked” or “ready to eat.” These have typically been cured in a brine and then smoked or baked at the processing plant.
City Ham vs Country Ham
City hams are the most common. These are wet-cured and usually sold spiral-sliced or as whole bone-in portions. Because they have a high moisture content, they are the ideal candidates for a second round of smoking. Country hams, on the other hand, are dry-cured and aged. They are extremely salty and much drier. If you attempt to smoke a country ham like a city ham, you will likely end up with something resembling a salt block. This guide focuses on the popular city ham.
Bone-In vs Boneless
A bone-in ham typically offers better flavor and moisture retention. The bone acts as a conductor of heat but also helps keep the structure of the meat intact. Boneless hams are easier to slice but can dry out faster because they lack that internal thermal mass. If you are choosing based on timing, a boneless ham will heat through slightly faster than a bone-in variety of the same weight.
Determining the Ideal Smoking Time
The golden rule for smoking a pre-cooked ham is to plan for approximately 15 to 20 minutes per pound. However, this is a baseline. The total time depends heavily on your smoker’s temperature and the thickness of the meat.
The Low and Slow Approach
If you set your smoker to 225 degrees Fahrenheit, a 10 pound ham will likely take between 3 and 4 hours to reach the target internal temperature. This lower temperature is preferred because it allows more time for the smoke to penetrate the meat and for the fat on the exterior to soften and meld with your rub or glaze.
The Standard Reheating Approach
Increasing the temperature to 250 degrees Fahrenheit or 275 degrees Fahrenheit will shorten your window. At 250 degrees Fahrenheit, you might find the ham is ready in 12 to 15 minutes per pound. While this saves time, you must be more vigilant about moisture. The faster the exterior heats up, the more likely the outer layers are to become tough before the center is warm.
Step by Step Process for Smoking Success
To get the most out of your smoking session, you shouldn’t just toss the ham on the grates. A few preparation steps will ensure the smoke actually sticks and the meat stays hydrated.
Preparing the Ham
Remove the ham from its plastic packaging and pat it dry with paper towels. Many people make the mistake of leaving the ham wet, but smoke adheres better to a dry surface that has a light coating of fat or a binder. If the ham is not spiral-sliced, use a sharp knife to score the fat in a diamond pattern, cutting about a quarter-inch deep. This allows the smoke and glaze to seep into the meat rather than just sitting on the surface.
Choosing Your Wood
Since the meat is already cooked, you don’t need a heavy, aggressive smoke like mesquite. Fruitwoods are the champions of the ham world. Apple, cherry, and peach provide a subtle sweetness that complements the natural saltiness of the pork. Hickory is also a classic choice if you prefer a more traditional, “bacon-like” aroma.
Managing Moisture During the Smoke
Because the biggest risk is dehydration, many pitmasters use a water pan in the smoker to keep the environment humid. Additionally, you can spritz the ham every hour with apple juice, apple cider vinegar, or even a mixture of bourbon and maple syrup. This keeps the surface supple and helps build a beautiful “bark.”
The Magic of the Glaze
The glaze is the crowning glory of a smoked ham. However, timing is critical. If you apply a sugar-based glaze too early, it will burn and turn bitter long before the ham is hot.
When to Apply
You should wait until the internal temperature of the ham reaches about 130 degrees Fahrenheit. This is usually within the last 30 to 45 minutes of the smoking process. Brush the glaze on generously, ensuring it gets into the scores or between the spiral slices.
Glaze Ingredients
A successful glaze needs a balance of sugar and acidity. Common bases include brown sugar, honey, or maple syrup. Mix these with dijon mustard, pineapple juice, or balsamic vinegar to cut through the sweetness. Spices like cloves, cinnamon, or even a dash of cayenne pepper can add a sophisticated depth to the profile.
The Target Temperature and Resting
The ultimate goal is an internal temperature of 140 degrees Fahrenheit. Since the ham is already cooked, you aren’t looking for a “done” temperature in the sense of food safety, but rather a “serving” temperature that is hot all the way to the bone.
Using a Meat Probe
Do not rely on time alone. Insert a meat thermometer into the thickest part of the ham, making sure not to hit the bone, which can give a “false high reading.” Once the thermometer hits 140 degrees Fahrenheit, remove the ham from the smoker immediately.
The Importance of Resting
Like any large cut of meat, a ham needs to rest. Tent it loosely with aluminum foil and let it sit for at least 15 to 20 minutes. This allows the juices to redistribute. If you cut into it the second it comes off the grill, all that moisture you worked so hard to preserve will end up on the cutting board instead of in the meat.
Factors That Can Alter Your Timeline
Even with a 20 minute per pound estimate, several factors can throw off your schedule. Being aware of these will help you adjust on the fly.
Ambient Temperature
If you are smoking a ham on a freezing Christmas morning, your smoker will struggle more to maintain heat than on a mild spring day. Expect a longer cook time in cold or windy conditions.
Smoker Crowding
If you are smoking side dishes like mac and cheese or beans alongside your ham, the airflow might be restricted. Ensure there is at least two inches of space around the ham for the heat and smoke to circulate evenly.
Starting Temperature of the Meat
Taking a ham directly from a 35 degree Fahrenheit refrigerator and putting it on the smoker will take longer than letting it sit on the counter for 30 minutes to take the chill off. While you shouldn’t leave meat out for hours, a brief period to bridge the temperature gap can help the meat heat more evenly.
FAQs
-
What is the best temperature to smoke a pre cooked ham?
The ideal temperature for smoking a pre-cooked ham is between 225 degrees Fahrenheit and 250 degrees Fahrenheit. This range is high enough to heat the meat thoroughly within a reasonable timeframe but low enough to prevent the exterior from drying out or the sugars in the glaze from burning.
-
Do I need to wrap the ham in foil while smoking?
You do not need to wrap the ham initially, as this would prevent the smoke from flavoring the meat. However, if you notice the edges are getting too dark or the meat is reaching 130 degrees Fahrenheit but the center is still cold, you can wrap it in foil for the final stretch to accelerate the heating process and lock in moisture.
-
Can I smoke a spiral-sliced ham without it drying out?
Yes, but you must be extra careful. Because the slices increase the surface area, moisture escapes more easily. To prevent drying, keep the ham face down on the grate or in a shallow roasting pan with a bit of liquid (like pineapple juice) at the bottom, and be diligent about spritzing the exterior.
-
How much ham should I buy per person?
When buying a bone-in ham, plan for about 0.75 to 1 pound of meat per person. For a boneless ham, you can scale back to 0.5 pounds per person. This ensures everyone gets a hearty serving with enough left over for the inevitable and delicious leftover ham sandwiches.
-
Can I smoke a ham that was previously frozen?
Absolutely, provided it is completely thawed before it hits the smoker. Thawing a large ham can take 2 to 3 days in the refrigerator. Never attempt to smoke a partially frozen ham, as the outside will become dangerously overcooked before the inside even reaches room temperature.