How to Cook Gammon – Times, Methods and Glazing Guide

Gammon is a cured pork joint that requires cooking before eating, making it a versatile centrepiece for Sunday roasts, festive dinners, and hearty weeknight meals. Understanding the right techniques and timings ensures a moist, flavourful result whether you prefer boiling, roasting, or using a slow cooker.

The cooking method you choose will affect both the texture and flavour of the final dish. Each approach has its advantages, and many cooks develop a preferred technique based on convenience and taste preferences. This guide covers essential timings, temperatures, and finishing touches to help you achieve perfectly cooked gammon every time.

How Long Does Gammon Take to Cook?

Cooking times for gammon depend primarily on the weight of the joint and the chosen method. The most reliable approach combines time estimates with temperature checks using a meat thermometer.

• Always use a meat thermometer for accurate doneness checks
• Cooking times vary between appliances, so time estimates serve as guides only
• Smoked gammon should be soaked for 1-2 hours before cooking to reduce saltiness
• Skim foam from boiling water during cooking to remove impurities
• The joint is done when a knife slides in with no resistance
• Rest the joint for 10-20 minutes before slicing

How to Boil Gammon

Boiling is one of the most traditional methods for cooking gammon and produces particularly moist results. This technique works well for larger joints and allows flavourings to permeate the meat throughout cooking.

Step-by-Step Boiling Process

Place the gammon joint in a large pot and cover it with cold water. Adding aromatics such as bay leaves, peppercorns, cloves, cider, or beer can enhance the flavour profile significantly. Bring the water to a boil over high heat, then reduce to a gentle simmer.

Once simmering begins, use a slotted spoon to remove any foam that rises to the surface. This step improves the clarity of the cooking liquid and removes impurities. Maintain a gentle simmer throughout cooking rather than a vigorous boil, which can make the meat tough.

Calculate the cooking time at approximately 20-30 minutes per 500 grams plus an additional 30 minutes. A 2kg joint, for example, requires around 1 hour 40 minutes of gentle simmering.

Finishing the Boiled Joint

When the calculated time has elapsed, remove the joint from the pot and allow it to cool slightly. The skin can be removed at this stage, though retaining a thin layer of fat underneath helps keep the meat juicy during glazing or serving.

Best Way to Roast Gammon in the Oven

Roasting produces a beautifully caramelised exterior while keeping the interior tender and juicy. This method is particularly popular when serving gammon as a centrepiece, as the golden glazed surface looks impressive on the table.

Preparing for Roasting

Preheat your oven to 180°C (160°C fan or Gas Mark 4). Place the joint in a roasting tin and cover loosely with foil to prevent the surface from drying out during the initial cooking phase. Roast for 30 minutes per 500 grams plus an additional 30 minutes at the end.

Twenty to thirty minutes before the end of cooking time, remove the foil from the joint. This is the moment to score the fat layer in a diamond pattern, which allows the glaze to penetrate and creates an attractive finish when caramelised.

The Glazing Process

After scoring the fat, brush the surface generously with your chosen glaze. Popular combinations include honey mixed with mustard and brown sugar, maple syrup with coarse mustard, or simply light brown soft sugar rubbed into the fat. Place the joint back in the oven uncovered, allowing the glaze to caramelise and develop a glossy finish.

Most recipes call for applying two layers of glaze, with each layer baked for approximately 15-20 minutes at 180-200°C. Between applications, cover the edges of the joint with foil to prevent the glaze from burning on the exposed meat.

Slow Cooker Gammon Instructions

The slow cooker offers a convenient hands-off approach to cooking gammon, making it ideal for busy days or when preparing food in advance. This method produces exceptionally tender meat that falls apart easily.

Setting Up the Slow Cooker

Place the gammon joint in the slow cooker and add flavourings if desired, such as cider, brown sugar, bay leaves, or peppercorns. Unlike boiled or roasted gammon, no soaking is required unless the joint is specifically smoked. For smoked varieties, soaking for 1-2 hours in cold water helps reduce the salt content.

For a 1.5-2kg joint, cooking on the high setting takes approximately 4-5 hours, while the low setting requires 6-8 hours. A useful calculation is roughly 1.5 hours per 450 grams plus 20 minutes on the high setting.

Finishing in the Oven

After slow cooking, transfer the joint to a roasting tin and place it in an oven preheated to 180-200°C for glazing. This brief oven finish creates the caramelised exterior that distinguishes glazed gammon from simply poached meat.

Apply the glaze as you would for oven-roasted gammon, using two layers with baking time between applications. The Vikalinka recipe notes that this final glazing step typically takes 15-20 minutes and transforms the pale slow-cooked exterior into a rich, glossy finish.

How to Cook Gammon Steaks

Gammon steaks offer a quicker alternative to full joints, requiring only a fraction of the cooking time. These thick slices are cut from the gammon leg and cook rapidly due to their relatively thin profile.

Pan-Frying Method

Heat a frying pan over medium-high heat and add a small amount of oil or butter. Place the steaks in the pan and cook for 3-5 minutes on each side. The exact time depends on the thickness of the slice and your preferred level of doneness.

Gammon steaks benefit from being cooked until they develop a golden crust on the outside while remaining juicy within. Unlike full joints, steaks do not require resting time before serving.

Oven Method for Steaks

When cooking gammon steaks in the oven, treat them as thin joints and roast at 180-200°C for approximately 20-30 minutes total. Use a meat thermometer to ensure the internal temperature reaches at least 70°C, though steaks typically reach this temperature more quickly than larger cuts.

Gammon Cooking Tips and Safety

Food safety considerations are essential when cooking gammon, as with any pork product. Proper temperature control and storage practices help prevent foodborne illness while ensuring the best eating experience.

Cooking from Frozen

Thawing gammon before cooking is strongly recommended for both boiling and oven methods, as this ensures even cooking throughout the joint. Placing a frozen joint directly into boiling water or a hot oven can result in the outside overcooking while the centre remains frozen.

Pressure cookers and Instant Pots can accommodate frozen gammon with a 50% increase in cooking time, calculating approximately 15 minutes per 450 grams. Slow cookers, however, are not recommended for frozen joints due to the extended time required in the danger zone temperature range.

Storage and Reheating

Cooked gammon keeps in the refrigerator for 3-5 days when stored in an airtight container. Portions can be frozen for longer storage and defrosted thoroughly before reheating. When serving cold gammon, keep it refrigerated until needed and consume within the recommended timeframe.

To reheat cooked gammon for hot serving, ensure it reaches an internal temperature of 75°C throughout. Serve with accompaniments such as mashed potatoes, seasonal greens, or fresh salads.

Gammon Cooking Timeline

1. Preparation (1-2 hours if soaking): If using smoked gammon, soak in cold water to reduce saltiness. Pat dry before cooking.
2. Initial cooking (varies by method): Boil, roast, or slow cook according to the weight-based time calculations for your chosen method.
3. Temperature check (1 minute): Insert meat thermometer into the thickest part, ensuring it reads 68-75°C before proceeding.
4. Glazing (30-40 minutes): Remove skin, score fat, apply first glaze layer, bake at 180-200°C for 15-20 minutes.
5. Second glaze application (15-20 minutes): Add remaining glaze, return to oven until caramelised and glossy.
6. Resting (10-20 minutes): Allow the joint to rest before slicing, which helps retain juices.
7. Slicing and serving: Slice against the grain and serve hot or cold as preferred.

Understanding Gammon and Ham

In UK cooking terminology, gammon refers specifically to uncooked or partially cured pork leg sold as a joint. Once this raw gammon is fully cooked, it transforms into ham, which is ready to eat without further preparation.

This distinction means that gammon always requires cooking before consumption, while ham can be sliced and eaten directly. The terms are sometimes used interchangeably in casual conversation, but understanding the difference matters when following recipes or shopping for ingredients.

Both gammon and ham come from the pig’s hind leg, and the curing process (which may involve salt, smoke, or sugar) develops the distinctive flavour associated with these cuts. The length and method of curing determine whether the product is classified as gammon requiring cooking or ham ready for immediate consumption.

What the Experts Say

The key to perfectly cooked gammon is patience and temperature control. Don’t rush the cooking process, and always verify doneness with a thermometer rather than trusting time estimates alone.

— BBC Good Food, How to Cook and Prepare Gammon and Ham

Glazing transforms a simple boiled gammon into something special. The caramelised sugar combined with mustard or honey creates that beautiful lacquered finish that makes gammon such a celebration dish.

— Vikalinka, Slow Cooker Gammon Honey Glazed Ham Recipe

Summary

Cooking gammon successfully requires understanding the relationship between joint weight, cooking method, and internal temperature. Whether boiled, roasted, or slow-cooked, the meat reaches perfection when the internal temperature reaches 68-75°C and the knife slides in without resistance. Glazing adds the finishing touch that makes gammon a memorable centrepiece, while proper storage ensures leftovers remain safe to eat. For more dinner inspiration, explore our collection of recipes that complement this versatile cut.

Frequently Asked Questions