If you don’t whisk enough, the butter will float to the top like a traitor. You’ll have weird, greasy streaks. That is not heavy cream. That is a mess.
If you use salted butter, your cream will taste like a movie theater popcorn. Which is great for popcorn. Terrible for your fancy chocolate mousse.
And if you try to boil this mixture? It might separate. Don’t do that. Just simmer. Be gentle with your Franken-cream.
Pro Tip For The Brave
You can also use whole milk instead of half-and-half. Use one tablespoon of butter per cup of milk. But that’s making half-and-half from milk. That’s a different rabbit hole.
Today, we are ascending. We are turning half-and-half into a full-fledged heavyweight. We are the cream whisperers.
So go forth. Melt some butter. Whisk until your arm gets a little tired. Create your own luxurious dairy product. And smile, because you just outsmarted the grocery store.
Now, go make something delicious. You earned it, you mad kitchen genius.