This graham cracker flavour provides a very lovely "base" to work with.
It is not a very concentrated flavor, but has a lasting effect.
Though called a cracker, it is sweet rather than salty and so bears some resemblance to a cookie—digestive biscuits are the closest approximation. The true graham cracker is made with graham flour, a combination of fine-ground white flour and coarse-ground wheat bran and germ. Graham crackers are often used for making s'mores and pie crusts.
