Here's one from the Prairie Home Cooking cookbook.
Brew Pub Pickled Onions
makes 6-8 8oz jars
1/2 cup salt
2 pounds small white boiling onions (about 1" dia)
5 cups malt vinegar
1/2 cup sugar
2 tablespoons mixed pickling spice
5 whole cloves
10-12 black peppercorns
Day 1. Place the salt in a...