Wash radish, remove stalk, peel and remove any blemishes or worn areas.
Slice the radish lengthwise down the middle.
Slice the radishes into half-centimeter thick slices. This should result in half moon shaped slices.
Place the radish into the mixing bowl and cover with cold water. Let sit for at least a half hour. This is important, as the daikon radish has a pungent odor when pickled and this step helps reduce it. After the wait, rinse the radishes and and place them into the canning jar.
In the sauce pan combine the other ingredients and heat over medium-high heat. When it begins to bubble, turn off the heat and pour it into the canning jar.
If necessary, top up the jar with more water and vinegar. All the radishes must be fully submerged.
Seal the jar and let it come to room temperature on the counter, then refrigerate.