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I’m using an interesting ingredient in this slow cooker gammon to give it a lovely sweetness, as well as helping to keep it nice and tender.
I could ask you to scroll down to find the answer, but I won’t do that to you!
It’s Coca Cola! Yep cooking gammon in coke might seem a little bizarre, but it works so well!

A Slow Cooker Gammon is partially sliced on a wooden chopping board, with a carving fork beside it. Two glasses of white wine are in the blurred background.

Nicky’s Notes

It takes minimal effort to prep this recipe, with the slow cooker is doing most of the work. We’re also going to finish it off with a quick honey mustard glaze to give the gammon a sweet sticky finish.

Take some nice thin slices of this tender sweet slow-cooked gammon and serve it on some buttered fresh bread, it tastes fantastic 😋

📋 Ingredients

Gammon – slow-cooking stage

A wooden table holds a raw gammon joint on a plate, ideal for cola ham slow cooker recipes. Alongside are two bottles of full-fat coke and spices: ground ginger, allspice, black pepper, and a cinnamon stick.

To make this slow cooker gammon you’re going to need:

  • Gammon joint – 2kg-2.5kg is a good size. You can use smoked or unsmoked, your preference – what kind of bacon do you like? Go with the same preference.
  • Full Fat Coca cola (not diet coke) – enough to completely cover the gammon – I use about 3 litres.
  • Spices including, cinnamon, ground ginger, allspice and ground black pepper.

For the glaze

Ingredients on a wooden table include a small bowl with ground cinnamon and cloves, a bowl of light brown sugar, a jar of Dijon mustard, and a bottle of honey—perfect for crafting your slow cooker gammon masterpiece.
  • For the glaze we are using, ground cinnamon, ground cloves, light brown sugar, dijon mustard, and honey.

Abbreviated Recipe

***Full recipe with detailed steps in the recipe card at the end of this post***

Add the gammon to the slow cooker with cola and spices. Slow cook for 4.5 hours on high or 6 hours on low. Remove the gammon, remove the skin, score the fat layer, and cover it in the honey mustard glaze. Bake it in the oven until sticky and dark golden.

    Recipe Tips

    • Line your baking tray with foil because the glaze may bake onto the tray making it difficult to clean off later.
    • Don’t worry about the gammon being fully submerged in the liquid when in the slow cooker. If there’s liquid covering the bottom of the gammon, it will retain its moisture.

    What’s the difference between Ham and Gammon?

    Gammon is a joint of pork that’s been cured (by smoking, brining or salting), similar to that of bacon, and is sold raw. Ham has either been dry-cured or cooked.

    Slow Cooker Gammon on a wooden chopping board with a carving fork beside it, showcasing the delicious results of gammon cooked in cola. A glass of wine and decorative item rest in the background, setting an inviting scene for this flavourful creation.

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    🍽️ What to serve it with

    I like to serve this as a centerpiece of a buffet that the whole family can dig into. But you could also serve it:

    • On a sandwich with some fresh bread
    • Take thin slices and turn them into ham and cheese stuffed croissants < a Christmas Breakfast favourite!
    • As an accompaniment to salads such as my Pasta Salad.
    • Or go for that British classic of gammon and pineapple (I like to add a fried egg) and some chips (fries)
    A close-up of filled ham and cheese croissants topped with poppy seeds on a dark surface.

    If you have any leftovers then why not make them into a tasty Turkey and Ham Pasta Bake.

    Slow Cooker Gammon on a wooden chopping board with a carving fork, partially sliced. A glass of white wine and sliced gammon are in the background, hinting at the rich flavours achieved when you discover how to cook gammon in the slow cooker for your next feast.

    Leftovers Guide

    • Cook and cool the gammon. Once cooled, wrap the gammon in foil or place in an airtight container and place in the fridge. It should keep for up to 3 days.
      You can leave it whole, or slice it up before storing.

    Watch how to make it:

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    4.75 from 4 votes

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    Slow Cooker Gammon Recipe

    The ingredients might sound weird but trust me this slow cooker gammon is tender and has a nice sweetness. Minimal prep time and the slow cooker is doing most of the work.
    Prep Time: 5 minutes
    Cook Time: 5 hours
    Total Time: 5 hours 5 minutes
    Servings: 12 -14 Servings
    Course: Party Food
    Cuisine: American, British

    Ingredients

    • 2 kg – 2.5kg (4.5-5.5lb) gammon joint smoked or unsmoked, your preference – what kind of bacon do you like? I use smoked
    • 3 litres (~100 fl oz) full-fat cola enough to completely cover gammon
    • 1 cinnamon stick or 1 tsp ground cinnamon
    • 1 tsp ground ginger
    • ½ tsp allspice
    • ½ tsp ground black pepper

    Glaze:

    • 100 g (1/2 cup) light soft brown sugar
    • 4 tbsp honey
    • 2 tbsp Dijon mustard
    • ½ tsp ground cinnamon
    • ¼ tsp ground cloves or 1/2 tsp allspice

    Instructions 

    • Place the gammon joint in the slow cooker, add cola, cinnamon, ginger, allspice, and pepper.
      2 kg – 2.5kg (4.5-5.5lb) gammon joint, 3 litres (~100 fl oz) full-fat cola, 1 cinnamon stick, 1 tsp ground ginger, 1/2 tsp allspice, 1/2 tsp ground black pepper
    • Cook on high for 4.5 hours or low for 6 hours. (See Note 1)
    • Remove from slow cooker, discard all but 2 tbsp of the cooking liquid. Place on a chopping board. Leave to cool for 10 minutes.
    • Preheat the oven to 190C/375F (fan) and line a baking tray with foil.
    • Using a sharp knife, carefully remove the skin from the ham joint. Leave as much of the fat as possible behind.
    • Score the layer of fat in diamond patterns using a sharp knife.
    • In a small bowl, mix together the glaze ingredients, plus 2 tbsp of the cooking liquid, until combined.
      100 g (1/2 cup) light soft brown sugar, 4 tbsp honey, 2 tbsp Dijon mustard, 1/2 tsp ground cinnamon, 1/4 tsp ground cloves
    • Spoon ¾ of the mixture on top of the ham. Place in the oven and cook for 20-25 mins, basting with the remaining glaze in the last 10 minutes of cooking.
    • Remove from the oven and rest the meat for 10 minutes before carving.

    Notes

    1. If you’re worried about there being a line on the gammon where it’s submerged in the liquid then you can turn it halfway through the slow cooking stage, although I didn’t find this to be a problem. 

    Nutritional information is per serving. There are approx. 12 servings in this recipe.

    Nutrition

    Calories: 256kcal | Carbohydrates: 15g | Protein: 37g | Fat: 5g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 0.03g | Cholesterol: 103mg | Sodium: 157mg | Fiber: 0.4g | Sugar: 14g

    Nutrition information is automatically calculated, so should only be used as an approximation.

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    This gammon recipe post was first published in November 2023. Updated in later for housekeeping.

    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 Kitchen Sanctuary running. The nutritional information provided is approximate and can vary depending on several factors. For more information please see our Terms & Conditions.

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    Hi, I’m Nicky, bestselling author, award-winning recipe creator and food photographer. I love to cook comforting, delicious and easy recipes and share them with you.

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    Comments

    1. Mark says:

      Brilliant like all her recipes

    2. Jan O’Connor says:

      I’m using a very small gammon (1.5 kg’s). Do I need to change the way I cook it (or the time)?

    3. Suzanne Divens says:

      How long would you cook in the slow cooker for a 10.11lb weight?

      1. lee says:

        7-8 hrs on low

    4. Diane Franks says:

      Hi, Do I have to cook in the oven? I am trying to save on energy costs hence wanting to cook the ham in the slow cooker. Is cooking in the oven purely to get the glaze on it? Thank you.

      1. Nicky Corbishley says:

        Hi Diane, the oven-cooking part is to get a bit of a crust on the gammon, and also to make the glaze get nice and stick on there. The gammon will be cooked by just using the slow cooker though.

    5. Jan says:

      5 stars
      Went down a treat, cooked it 2 days before Christmas and nibbled it till boxing day. It was a tad too sweet so I’ll use a bit less sugar next time in the glaze. Joint was cooked to perfection and the rind was so easy to take off with your easy instructions. Thank you Nicky. Ps I have a 3kg joint, cooking it tomorrow, how much longer do I cook it without drying it out please?

      1. Trevor says:

        4 stars
        Did you use 1/2 a cup of sugar or 100 grams? There seems to be some discrepancy on the recipe as 100 grams is well over 1/2 a cup. I measured out 1/2 a cup and it was only 74 grams

        1. Nicky Corbishley says:

          Hi Trevor, always go with the metric over the volumetric, as it’s much more accurate. So 100g is correct.
          100g is a standard measurement for half a cup of sugar, but the weight can vary slightly depending on how packed in it is. I always use metric measurements for my recipes, but try to provide volumetric for USA readers who often work with volumetric measurement.

    6. Linda says:

      5 stars
      I love all your recipes, they all work for me, the video’s of the recipes are superb, even tho’ I have the recipe books. You make wholesome food that we enjoy, no ready made meals in this house. Looking forward to your new book coming out as well.

    7. Terry says:

      About the only place in Canada to find gammon is the Atlantic provinces. The rest of us just have to make due with regular old smoked ham! 😏
      I just happen to have a skin on smoked ham in my fridge right now, so think I’ll give it a try with your recipe. The tmingi s perfect, as the overwhelming majority of the recipes I found say to remove the skin BEFORE cooking, so I’m really pleased you provided instructions for this method. I really like the sound of your glaze, too!
      Greetings, from Alberta, Canada 🇨🇦

    8. Ania says:

      5 stars
      Looks delicious. I will try this recipe. Thanks

    9. Gill says:

      Hi there.. just looking at your lovely recipe for Coca Cola gammon in the slow cooker.. yum..
      I am thinking of this for Boxing Day, can I slow cook it a day or 2 before, refrigerate, then glaze and roast on the day? Thank you