Chop the purple cabbage finely.
Place the chopped cabbage and rosemary into a pint-sized mason jar or other glass, plastic, or ceramic container with a sealable lid.
In a small saucepan, stir together vinegar and agave.
Add additional optional flavorings as desired.
Bring to a boil, then remove from heat.
Pour the mixture over the cabbage in a jar until full.
Place the lid on and let cool to room temperature.
Place the lid on to seal and refrigerate.
Wait overnight and use for your favorite recipes
Will last sealed in the refrigerator for 7-10 days