Slow cooker gammon served on a plate

Slow cooker gammon in cola

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(37 ratings)

Prep: 10 mins Cook: 6 hrs


Serves 6-8

Fill your kitchen with the smell of Christmas with this slow cooked gammon. The cola adds a sweet treacly flavour to balance the saltiness of the ham.

Nutrition and extra info

  • Gluten-free

Nutrition: Per serving (8)

  • kcal329
  • fat15g
  • saturates5g
  • carbs16g
  • sugars14g
  • fibre1g
  • protein33g
  • salt4.3g


  • 1½-1.8kg unsmoked boneless gammon joint
  • 2l cola (not diet)
  • 1 carrot, peeled and chopped



    The carrot, with its distinctive bright orange colour, is one of the most versatile root…

  • 1 onion, peeled and quartered



    Onions are endlessly versatile and an essential ingredient in countless recipes. Native to Asia…

  • 1 stick celery, chopped



    A collection of long, thick, juicy stalks around a central, tender heart, celery ranges in…

  • 1 cinnamon stick
  • ½ tbsp peppercorns
  • 1 bay leaf

For the glaze

  • 150ml maple syrup
    Maple syrup

    Maple syrup

    may-pul sir-rup

    The rising spring sap of a number of varieties of maple tree

  • 2 tbsp wholegrain mustard
  • 2 tbsp red wine vinegar
  • pinch of ground cloves or five-spice


  1. Set your slow cooker to medium. Place the gammon joint in and cover with the cola. Add 1 chopped carrot, 1 quartered onion, 1 chopped celery stick, 1 cinnamon stick, ½ tbsp peppercorns and 1 bay leaf.

  2. Cook for 5½ hrs on low until the gammon is tender but still holding its shape, topping up with boiling water if necessary to keep the gammon fully covered.

  3. Carefully pour the liquid away, then let the ham cool a little while you heat the oven to 190C/170C fan/gas 5. Lift the ham into a roasting tin, then cut away the skin leaving behind an even layer of fat. Score the fat all over in a criss-cross pattern.

  4. Mix the maple syrup, mustard, vinegar and ground cloves or five-spice in a jug. Pour half over the fat, roast for 15 mins, then pour over the rest and return to the oven for another 30 mins.

  5. Remove from the oven and allow to rest for 10 mins, then spoon more glaze over the top. Can be roasted on the day or up to two days ahead and served cold.

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Comments, questions and tips

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18th Jun, 2020
Really tasty. My only issue is that most of the glaze just ran straight off the joint so it didn't look quite as attractive as in the picture. It's also quite difficult to leave an even layer of fat on it, mine was fatty in some places and down to the meat in others but it didn't seem to harm it.
Kirstin Neale's picture
Kirstin Neale
5th Apr, 2020
I cooked my 2.5k for 8hrs in 1 75lt coke then transferred to the oven after coating with maple syrup ± wholegrain. Was amazing l
Luke Hector's picture
Luke Hector
2nd Feb, 2020
Can you cook it for longer? I'll be at work for 8 hours, I won't be able to get back to remove it after 5.5 hours.
Andrew Jackson's picture
Andrew Jackson
12th Feb, 2020
A handy tip is to use a timer plug. I get mine to switch off a bit earlier because of the continuing heat. I can always blast it later if I need to
24th Dec, 2019
Can I ask why the cola has to be full fat and not diet? I’ve only got diet in the house and wanted to cook it all day Christmas Day for Boxing Day! Thanks!
NewtonGirl's picture
25th Dec, 2019
Because you need the sugar in it. Diet drinks contain sweetener which don't work in cooking.
22nd Sep, 2019
It was ok, I put a glaze on and put it in the oven after
24th Dec, 2018
This recipe says to set on medium and then says cook on low, when do I turn it down to low?
goodfoodteam's picture
24th Dec, 2018
Hi there, The slow cooker should be on medium just to heat it up and put in the initial ingredients in step 1. Please then turn it down and cook on low from step 2 onwards. Thanks, BBC Good Food
17th Jun, 2020
If we don't have a medium setting on our slow cooker, can we then just set it at 'low'?
14th Jan, 2020
Can you use smoked gammon?
lulu_grimes's picture
17th Jan, 2020
Hi, We haven't tested this with smoked gammon so I'm not entirely sure what the final flavour would be, if you like smoky flavours then there's no reason why it wouldn't work. You could leave out the spice so your end flavour is smoky/sweet. I hope this helps.
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