2–3 large red onions, 1/4 inch slices (half moons)
1/4 cup sugar
1 teaspoon of salt
2 cups vinegar (I used 1 1/2 cups cider vinegar and 1/2 cup red wine vinegar)
1 teaspoon caraway seeds
1 teaspoon peppercorns
1/8 teaspoon ground allspice
1/2 teaspoon dried red chiles
Instructions
In a medium saucepan, add the sugar, vinegar, and seasonings. Heat over medium high heat until mixture comes to a boil. Stir to dissolve the sugar.
Place the onions in the saucepan with the vinegar mixture to par blanch them. After 2-3 minutes, ladle the onions and vinegar mixture into clean, sanitized jars leaving 1/4 inch of headspace. Slide a knife around the edge of the jar to eliminate any air bubbles. Screw lids onto the jars and tighten.
You can process these jars in a water bath canner for 10 minutes if desired. Or store in the fridge for several weeks.