Crack 1 egg into a bowl, add 1 tablespoon water, and whisk until smooth.
Prepare two trays:one with plain flourone with panko breadcrumbs Remove the chilled otah eggs from the fridge and reshape if needed.
Coat each one in flour, dip into egg wash, then roll in panko.
For a thicker crust, repeat the egg wash and panko coating once more.
Heat oil to 170°C, ensuring it covers at least three-quarters of each egg.
Deep-fry, turning occasionally, until golden brown and crispy.
Cut in half and serve immediately while hot.