Steamed Cabbage

Bahan-bahan (6 porsi)

• 1 medium head green cabbage
• 3 tablespoons unsalted butter
• 1 large yellow onion (thinly sliced)
• ¾ to 1 teaspoon kosher salt (plus additional to taste, divided)
• 2 cloves garlic (minced (about 2 teaspoons))
• ½ teaspoon celery salt (optional; use the higher amount of salt if omitting)
• ¼ teaspoon ground black pepper
• ⅓ cup low-sodium chicken broth (or vegetable broth)
• 2 teaspoons apple cider vinegar
• Chopped fresh herbs (optional for serving: parsley, dill, chives, tarragon, or a mix)