That would depend on which way it is being used. There are two ways to use Bread and Butter. The most common way is to use it as an idiom for one's livelihood. That company is your family's Bread and Butter. This simply alludes to the fact that without a means to make a living you can't eat. The second way is the superstitious idea that if something comes between a couple while they are walking one of them says, Bread and Butter. Alluding to the impossible task of separating butter once it has been applied to bread. By saying Bread and Butter it means nothing can come between them. These are common themes and likely started simultaneously in different places.
To refer to something as your " bread and butter " means it is a staple or fundamental to your life ... as necessary as food ... or your profession or "meal ticket" .... by Franklelandjohnson
Your bread and butter is your primary source of income (which puts food on your table).
It means the basics - if you get the basics right then the rest will be fine.
Basic necessity for livelyhood
The main thing that makes you money.
england
Ancient Rome... They would sometimes add eggs, butter and honey to bread dough.
We Butter the Bread with Butter was created in 2007.
Bread and butter is an idiom referring to one's ability to earn a living. So if someone plays an instrument professionally, or will do so, then their instrument is their means to earn income.
what is the mining of the bread and butter
Nothing. Do you perhaps mean "how much bread?" -- because bread is slang for money. It's slang and not an idiom.
bread and butter = lechem vechem'ah (לחם וחמאה)
The duration of Bread N' Butter is 2700.0 seconds.
no
a slice of bread and butter
we butter the bread with butter
Shakespear Play