Buy your rakkyo. If you are lucky, you can find them already cleaned. Just rinse and drain.
Make your sauce. This is the sauce measurements that was on the bag of rakkyo.For 1 kg. of rakkyo (the amount inside the bag):
350cc vinegar
250g sugar
60g salt
60cc mirin (sweet rice wine)
Heat these ingredients until the salt and sugar melt. Cool mixture.
Put your rakkyo in a glass or plastic jar. Pour the cooled mixture over and wait 20 days before eating.NOTES: I put a teaspoon of chili pepper in there too to give it a little kick!
Stay tuned...I think it's going to be good!