Scrub potatoes clean and place in a saucepan. Cover with water and bring to the boil then reduce the heat and simmer for 20-25 minutes or until potatoes are cooked and tender. Drain and leave to cool. Peel and mash the potatoes.
Heat oil and sauté onion, carrot and mushrooms. Add salt, pepper and chicken stock granules.. Dish out the mixture and leave aside to cool then mix with the mashed potatoes, crabmeat, spring onion and chilli. Add cornflour to mix.
Divide potato mixture into equal portions. Shape each into a pattie. Panfry patties for 2-3 minutes each side or until golden and heated through.