Crispy Onion Rings with Dipping Sauce

Ingredients

• 1 large yellow or sweet onion (cut into 1/2-inch thick rings)
• 1 cup whole milk
• 1 Tbsp distilled vinegar
• 1/2 cup sour cream
• 1 cup all-purpose flour
• 1/2 Tbsp sea salt
• 1/4 tsp ground black pepper
• 1 tsp garlic powder
• Oil for frying (use a high smoke point oil like canola)