This was a fantastic dish, but I tweaked it just a bit. First, I used shallots instead of onion, and chopped it instead of slicing it. I also layed some baby bok choy in the pan, then spread the celery and shallots on top of that. I served the bok choy with the fish. Then instead of discarding the celery and shallots, I mixed them into some wild rice for a side dish. It gave the rice a great flavor. I also added just a bti of sugar to the wine sauce as it was reducing because it was a bit sour. This may have not been a problem if I used a better wine.

I loved this recipe, though I changed it so I didn't have to run out to the store for any ingredients. I soaked the 2 kilos of white fish with happened to be Reineta (Pomfret family of fish found in Chile, South America) in white wine. I laid 3 thick slices of tomato and onion over the fish. Salt and pepper to taste. I sprinkled about 1/4 tsp of oregano over the vegetables and fish. I let it sit marinating for 30 minutes while I prepared the mashed potatoes. Bake fish uncovered for 45 minutes on 175º-200º Celcius. When the fish is served, pour remaining marinade over mashed potatoes. DELICIOUS!!!!