- Place the radish slices, onions and chillies loosely into a mason jar (or divide into a few smaller jars).
- In a saucepan, mix the Pickle ingredients, stirring until the sugar is dissolved. Heat on high and bring to boil, then remove from heat.
- Immediately pour the mixture into the jar(s) and use a heavy spoon to sit on the vegetables to ensure they are fully submerged. Let cool to room temperature and cover to sit overnight.
- Place the jars in the fridge and serve after 2-3 days, up to 6 mths.