There are many different types of fermentable sugars and knowing the difference between them will help you in creating the perfect wash recipe for your spirit.
Just like yeast, the type of sugar you should use depends on what you want to create.
For example, a wash for neutral spirits or gin is commonly made with refined sugars like table sugar (sucrose) or corn sugar (dextrose) because they do not impart flavours, whereas many “craft” spirits are usually made using a specific type of sugar like those from grain, molasses or fruit.