Bread And Butter -

: A "bread and butter note" is a brief, formal thank-you letter sent to a host after staying at their home [13, 30]. Emotional and Nutritional Impact

: It is the second most common breakfast combo in the world, trailing only bread and tea [16]. bread and butter

In English, "bread and butter" has evolved into a powerful idiom used in several contexts: : A "bread and butter note" is a