Making Butter

When I make butter, I put all of the cream from the milk into a jar. I shake the jar until the cream gets thicker. After the cream gets thick with liquid also I stop shaking it. I pour the liquid, butter milk, into a separate jar. I then put some salt into the butter and shake it some more. I let that sit in the fridge until it hardens. Once it is harder then I squeeze the butter under cold water to get the rest of the butter milk out of the butter. That is how I make butter.