1. Mince the ham until it is the consistency as minced beef. Put in a large mixing bowl then add the rice and onions. Stir until evenly mixed.
2. Mash the potatoes to slightly lumpy then add to the mixture. Add herbs, a bit at a time, to taste. Mix in pepper and salt if necessary. Mix the beaten egg into the mixture so that it is tacky and will stick together.
3. Put flour on a dinner plate. Using a serving spoon, take out a spoonful (or spoon and a half) into a floured hand and form into a 2.5-3cm deep disc/patty shape about 5-6cm across. Put the rissole onto the floured plate and douse with flour all over. Repeat this until mixture finished.
4. Fry the rissoles gently until golden brown on either side and warmed through. Serve with peas and poached egg.