Amish Coleslaw

Bahan-bahan (8 porsi)

• 1 medium head green cabbage (shredded thin, about 8 cups)
• 1 medium yellow onion (thinly sliced, about 1 cup)
• 1 cup white sugar
• ¾ cup vinegar
• ⅓ cup light flavored olive oil
• 1 teaspoon celery seed
• 1¼ teaspoons kosher salt
• 1 teaspoon yellow mustard
• ¼ teaspoon freshly ground black pepper