In a bowl, mix flour, coffee and baking soda well. Mix in powdered jaggery.

Cut butter into small cubes and work it into flour with finger tips until you get a sandy texture.

Make a well and add in the whisked egg and vanilla extract.

Mix it all together to get a dough, adding 1-2 tsp milk if needed.

Gently work in the chocolate chips.

Divide into 12 portions. Roll into balls, flatten lightly, arrange on a baking tray. Leave at least 1 inch space between the cookies. bake in a preheated oven at 180C for 12-14 minutes.

Remove and cool on a wire rack for 10 minutes. Store in airtight container.