Pickled Serrano Chiles | Saveur

Ingredients

• 2 cups extra-virgin olive oil
• 2 large white onions, halved lengthwise and cut crosswise into 1⁄4" slices
• 2 tsp. toasted cumin seeds
• 1 tsp. dried oregano
• 24 serrano or jalapeño chiles
• 12 whole allspice
• 12 whole black peppercorns
• 4 dried bay leaves
• 1 cup distilled white vinegar
• Kosher salt, to taste