Heat oven to 350 (175C). Pour the chcicken stock, water and white wine into a Dutch oven, cover and bring to the boil on the stovetop.
Stir in the aborio rice, season with salt and pepper and place covered into the oven for 18-20 minutes.
Remove from the oven. Take the lid off and quickly stir in the leg ham, frozen peas, butter, Parmesan cheese and lemon zest. Adjust seasoning if necessary.