1. Remove top and bottom ends of pumpkin, peel and cut open, remove pith, cut into 0.5-0.8cm thick slices, place on a plate, steam 4 minutes in high heat.
2. Cut cod fillet into 0.5cm thick slices, marinate by rubbing with salt and sugar, then add corn starch and mix, add sesame oil and olive pickles, mix well.
3. Place cod slices on top of pumpkin, steam in high heat for 5 minutes, scatter with chopped scallion, pour cooked oil over, drizzle with seasoned soy sauce for seafood, serve.