* As mentioned above, an egg can be substituted for the arrowroot powder with virtually identical results. Just mix it in with the other liquid ingredients and leave out the arrowroot.
** If you use pre-ground nutmeg and cardamom, use 1/2 teaspoon and 1/4 teaspoon respectively.
*** Other oils can be used in place of olive oil. I've used grapeseed and melted coconut oil with good results. Using coconut oil will result in a denser cookie once it cools.