Cooking a festive centerpiece doesn’t have to be a multi-hour ordeal that leaves your oven occupied and your kitchen sweltering. While the traditional method involves basting a heavy roast in the oven for three or four hours, the pressure cooker has revolutionized the process. Learning how to cook ham in the Instant Pot is perhaps the best “kitchen hack” for holiday hosting or meal prepping. By using pressure, you lock in moisture that often evaporates in the dry heat of an oven, ensuring every slice is succulent and tender.
Why the Instant Pot is the Best Choice for Ham
The primary challenge with cooking ham—specifically the precooked city hams found in most grocery stores—is preventing them from drying out. Since the meat is already cured and often smoked, you aren’t actually “cooking” it to reach a safe internal temperature from raw; you are reheating it to a palatable, juicy state.
In a traditional oven, the outer edges often become leathery before the center is warm. The Instant Pot creates a sealed, high-pressure environment where steam is forced into the fibers of the meat. This not only speeds up the process significantly but also guarantees a level of juiciness that is difficult to achieve otherwise. Additionally, it frees up your oven for side dishes like roasted vegetables, dinner rolls, or pies.
Selecting the Right Ham for Your Pressure Cooker
Before you start, you need to ensure your ham will actually fit. This is the most common hurdle for Instant Pot users.
Size and Weight Matters
For a 6-quart Instant Pot, you should look for a bone-in or boneless ham weighing between 3 and 5 pounds. If you have an 8-quart model, you can usually accommodate up to an 8-pound ham. It is vital to check the shape; a tall, skinny ham might prevent the lid from locking, while a wide, flat ham sits perfectly on the trivet.
Spiral Sliced vs. Whole
Spiral-sliced hams are convenient because they are already cut down to the bone, making serving a breeze. However, they are more prone to drying out. If you choose a spiral-sliced variety, you must be extra careful with your liquid levels and cooking time. A “whole” unsliced mini-ham is more forgiving and tends to stay even juicier under pressure.
Bone-In vs. Boneless
Bone-in hams generally have better flavor and provide a leftover bone that is gold for making split pea soup or beans later. Boneless hams are easier to fit into the pot and much simpler to slice. Both work beautifully in the Instant Pot, so choose based on your preference and the size of your crowd.
Essential Ingredients for a Flavorful Roast
While you can technically cook a ham with just a cup of water, adding a few aromatics and a signature glaze will elevate the dish from “standard deli meat” to a “gourmet feast.”
The Cooking Liquid
You need at least 1 cup of liquid to allow the Instant Pot to come to pressure. Instead of plain water, consider:
- Apple juice or cider: Adds a subtle sweetness that complements the saltiness of the pork.
- Pineapple juice: The acidity helps tenderize the meat.
- Chicken broth: Adds a savory depth without extra sugar.
- Root beer or Cola: A classic Southern technique that creates a dark, caramelized flavor profile.
The Sweet and Savory Glaze
A great glaze usually consists of a sugar base and an acid or spice. Common ingredients include brown sugar, honey, maple syrup, Dijon mustard, cloves, cinnamon, and balsamic vinegar.
Step-by-Step Instructions for Pressure Cooking Ham
Prepare the Ham
Remove the ham from its packaging and discard the plastic “button” that often covers the bone end. If your ham comes with a pre-packaged glaze packet, you can use it, but making your own is usually much more flavorful. If the ham is too large to fit, you can trim a few slices off the end or the side to ensure the lid closes properly.
Arrange the Pot
Place the stainless steel inner pot into the Instant Pot base. Pour in your chosen cooking liquid. Place the trivet (the metal rack with handles) into the pot. Position the ham on the trivet. If it is a spiral ham, try to keep the slices bunched together so the steam doesn’t separate them too early.
Apply the First Layer of Flavor
Rub about half of your glaze or a simple coating of brown sugar over the surface of the meat. This will melt during the pressure cooking process and season the liquid at the bottom, creating a delicious jus.
Setting the Time
Secure the lid and set the steam release valve to the “Sealing” position. Select the “Pressure Cook” or “Manual” setting on High Pressure.
- For a precooked bone-in ham: Aim for 2 minutes per pound.
- For a precooked boneless ham: Aim for 1.5 to 2 minutes per pound. If you are cooking an 8-pound ham, 15 to 20 minutes is usually the sweet spot.
The Importance of the Natural Release
Once the timer goes off, do not immediately flip the venting knob. A Quick Release can pull the moisture right out of the meat. Allow the pressure to release naturally for at least 10 to 15 minutes. This allows the juices to redistribute within the ham. After 15 minutes, you can vent any remaining steam.
The Finishing Touch: Searing and Glazing
While the Instant Pot is incredible for moisture, it cannot create a crispy, caramelized crust on its own. To get that “picture-perfect” look, you have two options.
The Oven Broil Method
Carefully remove the ham from the Instant Pot and place it in a baking dish. Brush the remaining glaze generously over the top. Place it under the oven broiler at 450°F for about 5 to 8 minutes, watching closely to ensure the sugar bubbles and browns but does not burn.
The Sauté Reduction
If you don’t want to turn on the oven, remove the ham and the trivet from the Instant Pot. Turn the pot to the “Sauté” setting. Let the liquid at the bottom boil and reduce until it becomes a thick, syrupy glaze. Pour this directly over the ham before serving.
Expert Tips for Success
To ensure your meal is a total success, keep these professional tips in mind:
- Check the Temperature: Even though the ham is precooked, it is best enjoyed when the internal temperature reaches 140°F. Use a meat thermometer to check the thickest part of the roast.
- Foil Wrap: If you are worried about a spiral ham falling apart or drying out, you can wrap the entire ham loosely in aluminum foil before placing it on the trivet. This creates a “pouch” that steams the meat in its own juices. Just be sure to add the cup of water to the bottom of the pot outside the foil. This also helps prevent the “Burn” notice.
- Leftovers: Don’t let anything go to waste. Vacuum seal or tightly wrap leftovers; they stay fresh in the fridge for 4 days or in the freezer for up to 2 months.
Frequently Asked Questions
Can I cook a frozen ham in the Instant Pot?
While it is possible, it is not recommended for the best texture. If you must cook from frozen, you will need to increase the cook time to about 5 to 7 minutes per pound. However, the outside may become overcooked while the center remains cold. For the best results, thaw your ham in the refrigerator for 24 to 48 hours before cooking.
What if my ham is too big for the lid to close?
If the ham is just an inch or two too tall, you can trim the bottom of the ham (the side touching the trivet) to flatten it. You can also cut the ham into two or three large chunks and stack them. If it’s significantly too large, you might be better off using the traditional oven method or a slow cooker.
Do I have to use the trivet?
Yes, using the trivet is highly recommended. It keeps the ham from sitting directly on the bottom of the pot, which prevents the “Burn” notice and ensures the bottom of the ham doesn’t become mushy from sitting in the cooking liquid.
How do I make the glaze thicker?
If your glaze is too thin after pressure cooking, you can create a cornstarch slurry. Mix 1 tablespoon of cornstarch with 1 tablespoon of cold water, stir it into the simmering liquid in the Instant Pot on the “Sauté” setting, and whisk until it thickens into a glossy sauce.
Can I use this method for a raw ham?
No, the times and instructions provided here are specifically for “ready-to-eat” or “heat-and-serve” cured hams. A raw, fresh ham (which looks like a giant pork roast) requires significantly longer cooking times and different seasoning to reach a safe internal temperature of 145°F and a tender texture.