Traditionally, we are required to wash their hands and say a blessing before eating any meal that includes bread or matzah. The ritual, known as netilat yadayim, is typically done using a two-handled cup, but any vessel will do.
There are various customs regarding how the water should be poured, but a common practice is to pour twice on the right hand followed by twice on the left
a person is still required to perform this ritual even if his or her hands are clean. It is also customary not to speak following the recitation of this blessing until reciting the blessing for bread and partaking of some.
בָּרוּךְ אַתָּה ה׳ אֱלֹהֵינוּ מֶלֶךְ הָעוֹלָם אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ עַל נְטִילַת יָדַיִם
Baruch ata Adonai, Eloheinu Melech ha-olam, asher kidshanu b’mitzvotav vitzivanu al n’tilat yadayim.