We describe an experiment in which the rotation of the polarization of light propagating in an
optically active water solution of D-fructose tends to be inhibited by frequent monitoring whether
the polarization remains unchanged. This is an example of the Zeno effect that has remarkable
pedagogical interest because of its conceptual simplicity, easy implementation, low cost, and
because the same the Zeno effect holds at classical and quantum levels. An added value is the
demonstration of the Zeno effect beyond typical idealized assumptions in a practical setting with
real polarizers.