In a medium sauce pan, place milk, cream and salt and stir together. Turn heat to med-low. Stirring occasionally.
You are trying to scald the milk, so when it looks bubbly around the edges, steamy and frothy, remove it from the heat.
Stir in the vinegar and give it one good stir and then let it sit undisturbed for 15 minutes.
After sitting undisturbed, stir it gently with a slotted spoon and you will see curds have formed.
Place several layers of cheese cloth over a strainer and gently pour the ricotta into the cheese cloth and let sit for at least 15 minutes (up to 60 minutes for a firmer ricotta) and let the whey drain out.
Then scrape the ricotta out of the cheese cloth and put in a covered bowl and place in the fridge until you are ready to use it. (It will firm up more when chilled). Enjoy!