I think that I found my favourite fish dish! It takes some time to prepare and is very rich, but worth the time and effort.
I had a fillet of black pollock which I cut into bite-sized pieces and dipped them in a glutenfree tempura batter: white rice flour (you could use brown rice flour, but this makes for a much lighter batter), some arrowroot starch, salt, water and a pinch of aluminum-free baking powder. I used about half half of the starch and flour and added enough water to make a batter that is not too thick but also doesn´t slide easily from the fish chunks – you really have to experiment with this one to get the right consistency. I deep-fried the coated chunks until light golden and let them drip excess oil on a paper towel.
Then I sauteed a large onion cut into big rings on some olive oil with a pinch of salt until soft and shiny. At that point I added a handful of raisins and some water and covered the pan with a lid to allow the raisins to absorb some water. When the raisins soaked up the liquid, I added a good splash of mirin and continued to cook for a while under the lid, on a low flame. The mirin makes anything cook really fast!
I arranged the fried fish chunks in a baking dish and covered each with a slice of organic lemon, peel included. Then I spooned on top the onion/raisin mixture and baked the dish in an oven on about 170°C, some 10-15 minutes, just until the lemons shrink and the onion starts to caramelize. The raisins should not get burnt!
The meal was served with a dip of tamari soy sauce, water, lemon juice and wasabi powder, with some blanched greens and with steamed rice sprouts.