Soak aniseed in boiling water for several minutes.
Drain cream butter and sugar together; beat 1 egg into butter mixture with aniseed; sift in flour and baking soda.
Blend to form a dough; wrap in foil.
Chill for 8 hours, or overnight.
Shape into small balls; beat remaining egg; brush on cookies.
Sprinkle with sesame seed; bake at 400Â° for 7 to 8 minutes