Preheat oven to 450 degrees F (230 degrees C). Grease cookie sheets.
Cream butter and sugar together. Add the eggs, mixing well. Set aside.
Sift flour, baking soda and coriander together. Add alternate batches of flour mixture and the milk to the butter/eggs/sugar mixture. Mix well. Knead on floured board until smooth.
Roll out dough and cut into 2 inch circles. Bake for 15 minutes or until light brown. Cool on racks.
