Prepare the Lotus Root: Peel the lotus root and, using a sharp knife or mandoline, cut it into very thin, uniform slices.
Blanch the Slices: Bring approximately 4 cups (960 ml) / 1 liter of water to a rolling boil in a medium pot.
Add the lotus root slices and blanch for exactly 90 seconds.
Shock in Ice Water: Immediately use a slotted spoon to transfer the blanched slices into a large bowl of ice water. This stops the cooking and ensures they remain crisp.
Let them cool completely.
Mix the Pickle: Drain the cooled lotus root slices thoroughly and pat them dry.
Place them in a non-reactive bowl (glass or ceramic).
Add the Sushi Rice Dressing and the grated beetroot.
Toss gently to combine well.
Marinate: Allow the mixture to stand at room temperature for at least 10 minutes for the flavors to develop and the color to infuse.
Serve and Store: Serve the Pickled Lotus Root at room temperature or chilled.
Refrigerate any leftovers in an airtight container for up to 5 days.
For the Spicy Variation
Follow steps 1-3 above to prepare and blanch the lotus root.
In a non-reactive bowl, combine the drained lotus root slices with the Sushi Rice Dressing, sliced serrano pepper, grated ginger, smashed garlic clove, and sliced green onion. Omit the beetroot.
Toss well and let stand at room temperature for 10 minutes before serving.