How to Make It
Trim the radishes, leaving about 1/2 inch of the stems. Halve the radishes lengthwise and transfer to a 2-quart glass jar.
In a saucepan, combine the water, vinegar, sugar and salt and bring to a boil, stirring. Let cool to warm, then add the garlic, chiles and ginger. Cover the radishes with the brine. Let stand until the brine has cooled, then cover and refrigerate overnight or for up to 3 days.