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Slow Cooker Gammon (5 Different Ways!)

My slow cooker gammon recipe is a quick way to prepare a meal with tasty results.

You can keep the recipe simple and place the gammon joint in a little water. Or, you can add some additional ingredients to create some different flavours.

Slow cooked gammon is perfect for Christmas, a Sunday roast, or any time of the year!

Either way, the preparation time is very short, and the resulting flavour is delicious.

Do you want to cook gammon a different way? Check out other popular methods, including cooking a gammon joint in an air fryer or using the pressure cooker function with my Ninja Foodi Gammon Recipe.

Read on to see how to cook a gammon joint in a slow cooker.

slow cooker gammon joint, sliced

🛒 What You Need

ingredients for cooking a gammon joint in a slow cooker: gammon joint, red onion, two carrots, bay leaf, peppercorns


  • Gammon joint – smoked or unsmoked
  • Vegetables – you can add any you like, I tend to add onions and carrots
  • Cloves/peppercorns – these are optional
  • Liquid – just plain water or experiment with different liquids (see below!)
  • Honey/Mustard – again, optional, you can glaze the cooked gammon and finish it off in an oven


  • Slow cooker – any size, but check if the gammon joint can fit in the slow cooker!

👩‍🍳 Making It – 5 Different Ways!

1. How To Cook A Gammon Joint In A Slow Cooker With Water

This is the quickest method. You just need to place the gammon in the slow cooker and then pour some water around it—around 250ml is enough, but you can add more, up to around 500ml.

uncooked gammon joint in a slow cooker with chopped carrots, red onion, bay leaf and peppercorns

Do I Need To Add Water To Cook Gammon In A Slow Cooker?

No, like with other slow cooker recipes, there is no need to put in any additional liquid. I like to put in a little at the bottom as I find it helps the gammon to come out a little moister. But, if you don’t add any water to the slow cooker, the gammon won’t burn.

2. Slow Cooker Gammon In Coke

Slow cooking a gammon joint in coke might seem like a strange idea. But if you’ve not tried it, you should!

ingredients for slow cooker gammon in coke: gammon joint, chopped carrots, chopped onion and coke bottle

The gammon does not end up coming out sweet as you would imagine – and it’s best to use normal full-fat Coke (although I know some people do use Diet Coke, especially to make it a Slimming World friendly recipe).

You can also use cherry coke; although I’ve not tried this myself, I have heard it comes out tasty.

3. Slow Cooker Gammon In Cider

Cooking a gammon joint in some dry cider is equally as tasty as the coke. Pour 400ml/500ml of dry cider over the gammon joint in the slow cooker. You can also add some cloves, peppercorns, and chopped-up onions.

4. Slow Cooker Gammon In Apple Juice

If cider isn’t your thing, you can substitute it for apple juice. Pour a similar quantity (400-500ml) over the gammon joint. Alternatively, you can also use pineapple juice or a large tin or 2 of pineapple chunks in juice.

5. Gammon In Slow Cooker With Honey

If you are making a glaze for the gammon (see details further down), you can use honey before putting it in the oven.

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You can also use some honey during the slow cooking process. Just mix 5 tbsp of honey with about 250ml – 500ml of water; hot water would be better as it will help the honey dissolve. You can also stir in some mustard and make it a honey and mustard gammon. 

How Can I Make Pulled Ham?

Leave the gammon in the slow cooker for a longer length so that it becomes more tender, and you can pull it apart and shred it. Leave it in for at least 8 hours on low. Use two forks to shred it.

Should I Soak Gammon Before Cooking It?

If you have bought a smoked gammon, you might want to pre-soak or boil away some of the salt before cooking it.

You don’t have to do it; it depends on how salty you like your gammon.

If you want to reduce the salt content, ideally, you will soak it in a bowl of fresh water for at least 12 hours before cooking it. Make sure the whole of the gammon joint is covered.

However, you can boil away the salt if you don’t have the time. Simply place the whole gammon joint in a large enough saucepan and bring it to a boil. 

🕕 How Long To Cook Gammon In A Slow Cooker

Cook it on low for 6 to 8 hours or high for 4 to 5 hours. Don’t worry too much if you go beyond this time; it’s unlikely that you will overcook the gammon joint thanks to the low cooking temperature of a slow cooker.

How To Tell If Gammon Is Cooked

Insert a sharp knife inside the gammon and pull it out. The meat isn’t cooked if you struggle to take it out or it feels a bit springy. Return it to the slow cooker to let it cook for longer. If in doubt, use a meat thermometer; the internal temperature at the deepest part should read 75°C.

cooked gammon in water

How To Make A Gammon Glaze 

You can either serve the gammon straight from the slow cooker or add a glaze and cook it in an oven for 15 to 20 minutes. If you have a suitably sized air fryer, you can also put it in there.

adding glaze to a slow cooked gammon and cooking in the air fryer

Carefully remove the netting from the gammon joint and the skin, leaving the layer of fat. Then, brush with your chosen glaze. I added a little runny honey, but you could use honey, mustard, or maple syrup.

🍽 How To Serve Gammon

Leave the gammon to rest for at least 10 minutes before carving it with a sharp knife. You can serve gammon as part of a roast dinner alongside roasted potatoes and vegetables.

📽 Video Recipe Cooking Gammon In Slow Cooker

🧾 More Slow Cooker Recipes

Are you looking for more slow cooker recipes? Here are some for inspiration!

👉 Recipe Card (Instructions + Print)

slow cooked gammon sliced on a plate

Slow Cooker Gammon

By Liana Green
Slow cooker gammon is a fantastic way to enjoy a soft and tender ham that is packed with flavour.
4.45 from 305 votes
Prep Time 5 minutes
Cook Time 4 hours
Total Time 4 hours 5 minutes
Course Slow Cooker Recipes
Servings 4
Calories 245 kcal


  • 1 kg gammon joint (smoked or unsmoked)
  • 1 onion
  • Cloves/peppercorns
  • 250 – 500 ml Water


  • Place gammon joint in slow cooker
  • Add chopped up onion (and any other vegetables), and peppercorns around the gammon
  • Pour in water (or your chosen liquid)
  • Place lid on slow cooker and set off for 4 hours on high, or 6-8 hours on low
  • Remove gammon from the slow cooker and leave to stand before carving (unless you are adding a glaze) – serve hot or cold.
  • Optional glaze:
    carefully remove any netting and the skin from the gammon, leaving the fat in place. Score the gammon joint and rub some honey over the top. You can also mix in some sugar and/or mustard. Place in a preheated oven (200°C/Gas Mark 7) and cook for 10 to 15 minutes

Some of the links in this post may be affiliate links – which means if you buy the product I get a small commission (at no extra cost to you). If you do buy, then thank you! That’s what helps us to keep Liana’s Kitchen running.


*You can swap the water for either; cola, apple juice, pineapple juice or dry cider.


Calories: 245kcal
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Saturday 24th of December 2022

The joint is almost ready, don’t want to put the oven on just to glaze it, have you tried using a blow torch to give the honey & mustard some colour?


Tuesday 27th of September 2022

Hi ya is the 250ml of water ment to be cold or boiling water I put in the slow cooker.

Liana Green

Wednesday 12th of October 2022

Hi Kissy - I tend to use cold water :)


Monday 12th of September 2022

I have a large almost 2kg for us two, would it be best to cook in one go or halved with one cooked and one frozen. With other half cooked at later date.

Liana Green

Wednesday 21st of September 2022

Hi Marilyn - I would cook it all at once, then you can save the leftovers for another meal (or use it in sandwiches or a soup)

Dave Milnes

Thursday 18th of August 2022

I always used to pre-soak, boil then roast gammon joints - but these days they seem to use much less salt in the cure, and using the same method often gives a ham that actually isn't salty enough! So your method (followed by a blast in a hot oven) could be the answer, so thanks!


Friday 24th of December 2021

Hi I stupidly cooked my gammon on low for 4.5 hours today, I am worried it isn’t long enough now? Can cook further in the oven tomorrow to finish it? I have cooled it now and it’s refrigerated?

Liana Green

Saturday 25th of December 2021

Hi Sarah - 4.5 hours might be long enough - did you check if it was cooked all the way through? We also cooked ours in the slow cooker today and will be reheating it in the oven tomorrow - just remember to heat it so that it is piping hot all the way through. I would also loosely wrap it in foil to stop it from drying out. Hope that helps!