• boiling hot water
• 3 medium sized white onions, thinly sliced
• 3 cups white distilled vinegar
• 4 tsp salt
• 1/2 tsp toasted oregano
• 2 Habanero chiles, minced

Pour hot water over onions to just cover, let soak for 3 minutes, then drain completely.

Cover onions with rest of ingredients, let season at least 1 hour.