Bring vinegar, sugar, salt and spices to a boil.
Pour vinegar mixture over grated zucchini, and onion.Let sit for 1 hour.
Thirty minutes into the hour, heat jars in a 250 degree oven.
After the hour is up, bring relish mixture to a boil, and cook for 3 minutes.
Bring water bath canner to a boil. Ensure there is enough water to cover the jars by one inch.
Pack relish into hot jars, with 1/2 inch headspace.
Wipe rim of jars with white vinegar, and attach lids and rings.
Process in a hot water bath for 10 minutes.
