Gammon cooking times are 20 mins per 450g + 20 minutes. To calculate the right cooking time, tap in a calculator: 20 / 450 x weight of your joint in grams + 20 minutes, then divide by two if using the boil+roast method.
Use untreated/unwaxed oranges.
I don't use allulose for the glaze because it tends to burn too quickly.
The only way to ensure accurate measurement of ingredients is with Metric Kitchen Scales. Click
HERE for the ones I use, or
HERE for U.S. alternative.