Heat the milk in a saucepan over medium heat until it is hot but not boiling.
Stir in the apple cider vinegar and let it sit for 5–10 minutes. The milk will curdle and separate into curds and whey.
Pour the mixture through a cheesecloth-lined colander to strain the whey, leaving the curds behind.
Transfer the curds to a bowl. Add melted butter, salt, and Provencal herbs. Mix until well combined.
Press into a mold or container if desired, and refrigerate for at least 1 hour before serving.
Serve fresh and enjoy within 5 days.