Wash the radishes thoroughly, peel them, and slice them into 1cm thick pieces.
Salt the sliced radishes and let them sit for 30 minutes.
Rinse the salted radishes with cold water and drain well.
In a pot, bring water, vinegar, sugar, and salt to a boil.
Place the rinsed radishes into a container and pour the pickling liquid over them.
Let cool at room temperature, then store in the refrigerator.