For my first job, I'm trying a simple cordial of rosemary, watermelon, apple and cinnamon. For the base I used vodka - which I found too late was very un-period. It's on day four, sitting in two quart mason jars, and has a very interesting flavor - the strong flavor of spirits subsiding more every day as the watermelon disintegrates. Soon, I will want to strain and bottle it.
Why did I pick watermelon and apple? Simply put, they are in season right now in the Outlands, and both easy to obtain and fresh tasting. The rosemary was added to give the cordials that medicinal/herbal quality so sought after in the original, period, products.