Why won't my butter and milk mix when trying to make cream? I wanted to make a heavy cream substitute. 

Here's what I tried:


Melted butter and stored it in a cup.


The pot I melted it in was not washed.

Used the same pot to boil milk.


Afterward, the milk looked yellowish with bubbles on it.

Strained the milk and put it in the refrigerator until it's cool.
Added the melted butter to the milk.


They wouldn't mix. They stayed separate like oil and water.



&nbsp;My questions:


Why wouldn't they mix? And how do I get them to mix?
Why did the milk look that way? Was it because of the remaining butter in the pot?
How can I make use out of this milk and butter?
I was thinking that this is a duplicate, but I can't find an original, and somebody edited it to be readable, so I will answer. 


They didn't mix, because they can't mix. You can't get them to mix. There is no way to make whipping cream out of milk and butter. 
The milk looked that way because there were bubbles of melted butter swimming in it. 
Use it in any recipe which requires some milk and some butter without caring about the order. Pancake batter, casserole topping, etc.