Birkat haMazon (Blessing of the Meal) is known in English as the Grace/Blessing after a Meal.
A "Meal" is defined as a meal which began with the breaking of bread. Without bread, the meal is seen as just a "snack", and the formula for this Grace is not said.
The traditional Grace consists of 4Talmudic blessings followed by a collection of later medieval petitions/requests (and the number and contents differ between the variousAshkenazi,Sefardi andMizrachi forms of the Birkat haMazon).
The Four Talmudic blessings are
There are also additions for special occasions (thesabbath, festivalsetc. - and for such matters ascircumcisions, weddings and funerals).