One recites the blessing for eating maror. One should be careful to eat a kazayit95, an olive's worth, is approximately 1.27 ounces. since eating less is not enough. There is a controversy about the measure of a kazayit and one should be sure to fulfill the opinions of all the decisors of Jewish law in eating the required amount…One should be careful to thoroughly clean the vegetables of worms.One has come to fulfill a commandment and one should not transgress other prohibitions by eating even one worm since the living creature will enter his heart. Blessed are You, Adonai our God, King of the Universe, who has sanctified us with His commandments and has commanded us on the eating of maror.