Radish is a quitte healthy vegetable. Lot's of people eat it just in fresh condition, but the marinade is really tasty, also. 

For 1 kg. radish you will need: 

50 ml. red wine vinegar 

50 ml. white wine vinegar 

50 gr. sugar 

100 ml. water 

Simmer both types of vinegar, water, and sugar. Wash and clean radishes. Pour marinade into jars, put radishes inside, let it cool and cover with the lid. Eat after at least one month.