- Put the water in a pan and add in the vinegar, ginger, cardamoms and peppercorns and let it boil until it reduces to a thicker syrup.
- Scrub the outside of the lotus root. Very thinly slice the lotus root into rounds (using a mandolin if you have one, or cut carefully with a sharp knife as thin as you can) and put in an airtight jar.
- Pour the boiled pickling mixture over the lotus root (including the spices), allow to cool then seal the jar.
- The pickled lotus root will keep for months in the fridge! Use it to top salads or add a tangy crunch to sandwiches. The pickle is very versatile and can be added to the base of stir-fries, soups and curry.