What is the collective nouns for butter?

There isn't a commonly used collective noun specifically for butter.

However, you could use some descriptive phrases to convey a group of butter:

* A pat of butter (for a small amount)

* A block of butter (for a larger amount)

* A tub of butter (for a large container)

* A supply of butter (for a general collection)

You could also use more creative options:

* A swirl of butter (for a smooth, continuous amount)

* A cloud of butter (for a light, airy amount)

Ultimately, the best collective noun for butter will depend on the context and the amount you're referring to.