Take milk and powdered jaggery in a bowl
Mix it nicely till jaggery is dissolved
Add oil and vanilla essence to it and mix
Then add wheat flour, cocoa powder, baking soda
Mix it nicely without forming lumps
Now add chocolate chunks and mix
Grease the ramekins with butter.
Pour the prepared batter to ramekins.
Heat the cooker or any pan. I used my steamer. if you are using cooker, use the plate with holes at the bottom and preheat for 5 minutes in medium flame.
Place the ramekins in streamer and bake in low flame for 20-25 minutes.
Enjoy the chocolate chunks mug cake.