Powdered sugar is a super fine sugar, finer than even castor sugar. It is often termed as 10X sugar, confectioner's sugar or icing sugar. In France, it is called Sucre Glace. The size of the sugar crystal varies 10X sugar is usually 0.010 mm, while confectioner's sugar is 0.060 mm, and icing sugar is 0.024 mm.t is a type of granulated sugar that has superfine granulated crystals, usually 0.35 mm. The term castor or caster sugar is mainly used in UK English and its Commonwealth countries. In North America, it is sold as super fine sugar.
Standard baking temperature is 350 degrees, which works just fine for fish. But you can get away with setting the temperature even lower. This extends the cooking time, which may help if other ingredients in the dish need more time to cook.
Best Answer: This really depends on the temp of the oven, the thickness of the fish and if you are baking it in an open or closed dish. For an open dish cooking steaks or fillets, I've read you bake in a preheated 350 degree oven for 17 minutes per inch of fish. I always bake at 350 in a covered container to keep the fish moist, and for smaller fillets I use about 25 minutes. Fish is a very light flesh and cooks quickly. You can test for doneness by checking it with a fork, when it's done it will be uniforming opaque in the thickest part of the fish and it will flake easily.