Separate cauliflower florets. Break to halves if very big. They should match size of carrot pieces. Add chilli, salt, turmeric. Transfer to a clean dry bowl, Keep in sun for 4 days.
Heat vinegar till warm.
Add jaggery, stir. Heat further till vinegar is very hot, and jaggery has melted. Cool to room temperature. Add to sunned vegetables. Transfer to a clean dry pickle jar, close lid tightly.