Using an extra large 4-cube silicone ice cube tray, divide the cranberries (10 to 12 each) between the cubes.
Add cranberry juice to just below the top of the cube.
Nestle 2 sprigs of rosemary between the cranberries per cube. The rosemary springs should stick out above the cranberries.
Freeze for 24 hours (can be made a week in advance). Be sure that they sit flat in the freezer.
Notes
* Serving suggestions: with sparkling wine, in a gin and tonic or with seltzer (for a non-alcoholic drink). As the ice melts, it will flavor the drink. * Depending on the size of your ice cubes, you may need to adjust the measurements to the quantity of ingredients. * I used a cranberry juice cocktail as I wanted something that was made just from cranberries and had a bit of sweetness. Depending on how you are using these cubes, you could use another variation of cranberry juice (sweetened or unsweetened) but I would stay away from a blend as they contain other juices such as apple. * Need a larger quantity, but don’t want to purchase lots of trays? Prepare a batch at a time, remove them from the silicone tray, transfer to a glass or plastic container with a lid and pop them back in the freezer.