There are two sorts of almonds, the bitter almond and the sweet almond. Bitter almonds are used to make almond oil, which is used in many baking recipes to add an intense almond flavour. Sweet almonds are among the most commonly used nuts. Ground sweet almonds are especially useful in baking and can be substituted for flour to create a dense, moist texture in cakes and biscuits. They are also used in savoury dishes – ground almonds thicken romesco sauce and add texture and flavour to chicken korma.