Fine sugar is also called young sugar. Fine sugar or granulated sugar, are sucrose, the difference is in the size of the particles are different. Smaller particles are better for dissolving, and fine granulated sugar is generally used in baking, because her dissolving time and whipping time are in sync. Granulated sugar, the particles are too large, often people are finished, granulated sugar particles are still there to stay, and then into the oven after it, not a particle grain is a hole or a grain of caramel points. So generally unless specifically emphasized, baking commonly used sugar is fine sugar rather than granulated sugar.
Mian white sugar: Mian white sugar is the sugar crushed, wrapped in the outside of the conversion syrup (= glucose + fructose) of a thing. Granulated sugar crushed well, so naturally better than granulated sugar to dissolve it, the syrup is sweeter than granulated sugar, so the sugar is also sweeter than granulated sugar some. And because the outside is covered with sugar syrup, granulated sugar particles are also broken, so it is easier to form a piece. Mian white sugar is suitable for making cold persimmons and other things, well dissolved and sweet. Do baking without fine sugar, you can use white sugar to temporarily replace, but do not use granulated sugar instead. The effect is not as good as using fine sugar or powdered sugar.
Powdered sugar, from the name can also be easily seen, refers to the powdered sugar. The powdered sugar sold on the market is usually mixed with about 3% starch in order to prevent it from clumping during storage. There are many grades of powdered sugar, depending on the coarseness of the granules. Powdered sugar of "10X" size is the finest. The most common type of powdered sugar used is 6X.
Powdered sugar has many uses. It can be used to make cookies, cakes, etc. More often, it is used to decorate pastries. A layer of powdered sugar sifted over the top of a finished pastry will make it look much prettier. It is also used to make frosting and cream fillings, such as meringue frosting when making gingerbread houses.