Sift flour and baking soda together.
Cream butter and sugar till it becomes soft, light and fluffy.
Add the extract and mix well.
Add flour and make a soft dough. At this point you may need to use your hand.
Allow the dough to chill in the fridge for 15-30 minutes
Mix jam very well till it becomes like a thick smooth paste.
Preheat the oven at 180°C.
Grease baking trays with butter or line it with parchment paper.
Take about half tbsp of the dough and roll it into a small ball. Continue till all the dough is over.
Using the back of a wooden spoon handle or rolling pin, make indents in the rolled balls.
Or use your thumb/finger.
Using a tiny spoon, drop a blob of jam in the indent.
Alternately use a piping bag.
Bake the cookies for 12 to 15 minutes.
Remove the tray from the oven. Leave the cookies on the tray for 5 minutes.
Remove from the tray and let the cookies cool on a wire rack.
Store in an airtight container.