Gammon cooking time calculator
Enter the weight of your gammon and how you want to cook it: roasted in foil, simmered then glazed, or in the slow cooker.
Gammon cooking times
Allow 20 minutes per 450 g (1 lb) plus 20 minutes in the oven at 180°C (160°C fan), 350°F, wrapped in foil. Then glaze it and give it 20 minutes at 200°C (180°C fan) to finish.
| Weight | Roasted in foil | Simmered, then glazed | Slow cooker on low |
|---|---|---|---|
| 1 kg (2.2 lb) | 1 h 5 min | 1 h 10 min | 5–6 h |
| 1.5 kg (3.3 lb) | 1 h 25 min | 1 h 30 min | 6–7 h |
| 2 kg (4.4 lb) | 1 h 50 min | 1 h 55 min | 7–8 h |
| 2.5 kg (5.5 lb) | 2 h 10 min | 2 h 15 min | 8–9 h |
| 3 kg (6.6 lb) | 2 h 35 min | 2 h 40 min | 9–10 h |
Gammon in the slow cooker
Put the gammon in the slow cooker and cover it with cola, cider, apple juice or stock. Cook on low for 5 to 8 hours depending on size, until it reaches 70°C (160°F) in the middle. Then glaze and roast it for 20 minutes if you want a sticky crust.
Gammon is raw cured pork; ham is the cooked version. If the label says “soak before cooking”, soak it in cold water overnight to take out some of the salt.
Questions
How long to cook a 1 kg gammon joint?
About 1 h 5 min in foil at 180°C (160°C fan), then glaze it for the last 20 minutes.
Do I need to soak gammon?
Most gammon sold today is mild and doesn’t need soaking. If the label says to soak it, leave it in cold water overnight.
Times are a guide: ovens and joints vary. Always check meat with a thermometer before serving. FeastFlow’s times come from British Turkey, AHDB and USDA guidance, last checked 9 November 2026.