Steam sausages till done.Wash potatoes. Poke holes all over with a knife. Wrap in kitchen paper. Place in microwave, cover with microwave lid, cook for 6-8 minutes.Remove skin and cube.Add seasoning, dhania (coriander), onions, chilli and trim. Mix in.Slice roll, spoon in potato salad. Place sausage, drizzle on sauce. Serve.