If you are a fan of cakes or pastries, do not despair
. It is not the end of the world. Good news is you can use other wheat free flour in your cooking.
Even though wheat is the most common flour used in baking, it doesn't mean that it is the only one. There are various other types of flour which can be used for baking. You can also find some specialty shops which has premixes of the various wheat free flour ready for baking. Besides that it is also possible to try recipes for flourless cake.
Find out the texture of the flour. Some substitute is more refined, by others are coarser. Choose one which is suitable. For example brown rice flour is grainier than the regular flour that you are used to. It is also heavier and normally is not used alone.
Taste of the flours. Certain substitute like potato flour has strong potato taste, some like buckwheat can be bitter. Some flour has nutty taste. When choosing a substitute, you may want to opt for those with minimal taste, so that if you add any essence e.g. vanilla or strawberry essence to your cake, you know what it will taste like when it's done! You can also test baking with additional condiments. This may mask the flour taste e.g. adding cinnamon or even chocolate. This is very true especially if the flour taste is very mild.
Mixing flour and binding agent. One of the reasons why wheat flour is commonly used for baking is because the gluten in wheat flour binds the dough. If the flour that you choose as substitute doesn't have gluten, then there are several ways to bind the dough. You can substitute half a cup of water with egg white. Another common substitute is guar gum or xanthan gum or add some plain gelatin to your mixture.