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.
How to tell when itâs cooked: Use a knife to pierce the fish at the thickest part and check the flesh, it should be barely opaque and slightly pink in the center. If you press with a fork, the flesh should begin to flake easily. Internal temperature reading from the thickest part should be at least 145Â°F (though this is debatable, Iâve seen references as low as 120Â°F and as high as 165Â°F, it depends on how well done you want it to beâ¦I prefer it heated to 135Â°F. The USDA recommends an internal temperature of at least 145Â°F for fish.).