Have a hot tray in the oven at 200C. Place cod on a bed of peas, zucchini, and fine cgopped asparagus. Close the papillote package most of the way, add wine and stock, and finish closing as the video shows.
Place the papillote onto the hot tray in the oven for 8-12 minutes depending on size of the fish.
Take the fish out and leave to rest for 5 minutes, pour the remaining stuff from the pouch into a pan. Slightly reduce and add all remaining ingredients finish with chopped dill.
