Amaranth flour
Amaranth flour is made from the seed of the Amaranth plant, which is a leafy vegetable. Amaranth seeds are very high in protein, which makes a nutritious flour for baking. Alternative names: African spinach, Chinese spinach, Indian spinach, elephants ear.
Arrowroot flour
Arrowroot flour is ground from the root of the plant, and is very useful for thickening recipes. It is tasteless, and the fine powder becomes clear when it is cooked, which makes it ideal for thickening clear sauces.
Barley flour
Barley only contains a small amount of gluten, so is rarely used to make bread, with the exception of unleavened bread. It has a slightly nutty flavour, and can be used to thicken or flavour soups or stews. Blended with other alternative flours it is also fairly versatile for cakes, biscuits, pastry, dumplings etc.
Brown rice flour
Brown rice flour is heavier than its relative, white rice flour. It is milled from unpolished brown rice so it has a higher nutritional value than white, and as it contains the bran of the brown rice it has a higher fibre content. This also means that it has a noticeable texture, a bit grainy.
It does have a slight nutty taste, which will sometimes come out in recipes depending on the other ingredients, and the texture will also contribute to a heavier product than recipes made with white rice flour.
It is not often used completely on its own because of its heavier nature.
Bulk buying is not recommended as it is better used when fresh, store in an airtight container.
Buckwheat flour
Buckwheat flour is not, despite its name a form of wheat, buckwheat is actually related to rhubarb. The small seeds of the plant are ground to make flour.
It has a strong nutty taste so is not generally used on its own in a recipe, as the taste of the finished product can be very overpowering, and a little bitter. Alternative names: beech wheat, kasha, saracen corn.