Leftovers: Refrigerate in an airtight container for up to four days.
Nut-Free: Omit the walnuts and use sunﬂower or pumpkin seeds instead.
More Flavor:Mix the apple cider vinegar with honey or maple syrup for sweetness. Add fresh herbs, dried cranberries, or crumbled goat cheese.
More Fat: Add extra virgin olive oil to the apple cider vinegar.