To make marzipan from almond flour, you will need: 1 cup almond flour 1/2 cup sugar 1 egg white 1 teaspoon almond extract In a medium bowl, combine the almond flour and sugar. In a separate bowl, whisk the egg white until it is frothy. Stir the egg white and almond extract into the almond flour mixture until everything is well blended.
The recipes for marzipan confections in that book use pure almond paste, which is high-carb and filled with sugar. The other low-carb cookbook is a Swedish book, Bakglädje med LCHF by Annika Rogneby (yes, I love to collect cookbooks in different languages, well, no wonder, I’m a linguist…).
You can add almond extract for enhancing the flavor. However, if you can get bitter almond flavor (NOT bitter almonds or bitter almond oil), that would give even more authentic marzipan flavor. I’ve bought my bitter almond flavor from Germany, but I wouldn’t wonder if you can buy bitter almond flavor online or even from your local store.