Well I think this is worthy of its own post. These can be very handy. You can make batches with different flavors. When I heard Michael Phillips as the World Barista Champion this past fall speak about how he smuggled in fresh rhubarb from the states for the competition in London to have control quality, he gave me license to experiment, humbly, of course. He did inspire me to think about coffee infusions in a whole new way. You can certainly sneak in some grated fruit flavors; test them out as you go. Rhubarb is first on the list, as soon as we can get some. Add or subtract from my suggested list as you like. —Sagegreen
Bring the water to a near boil. Spoon in the ground coffee beans, with half the zest and spices to a cone filter. Add the remaining zest and spices into the brewing pot. Slowly pour over 1/4 cup of the hot water into the filter. Let if brew slowly through the mix. Wait one minute. Then slowly pour the remaining water in the filter to complete the brew. Sweeten to taste if you like. Let cool.
Pour the cooled coffee (with the zest in or strained out) into an ice cube tray. Freeze overnight. Release the cubes and place in an air tight container or ziplock bag for future use. Label and note the ingredients you used in the batch: You may want to make other batches with other variations, and you will want to know the differences. Wash out the ice cube tray to prevent staining.