As the process of contemporary flour-making often affects its taste and nutritional quality, look for the stone-ground variety that’s ground in a revolving stone mill to ensure the best flavour.
There are two sorts of almonds, the bitter almond and the sweet almond ... especially useful in baking and can be substituted for flour to create a dense, moist texture in cakes and biscuits.
But macarons and dacquoise (meringue-based cakes) have traditionally been made with nut flour (almond, usually); financiers are composed mostly of nut flour combined with a small amount of wheat ...