Start by melting the butter slowly so it do not take color.
Add tomato paste and warm until it begins to bubble. Then turn it down again (do not boil).
Add the rest of the ingredients and stir it together quietly.
Let the sauce simmer for 5-6 minutes. Season with salt and pepper. You need more salt than you think.
Then it is ready for serving. That's how simple it is.
Video
Notes
You can make a large portion and then freeze in smaller quantities. Remember to use a heavy cream (38%) so that the sauce does not break when you heat it again.
Preferably use a "non-smoked" whiskey. Like Jack Daniels or a bourbon. A brown rom can also be used (eg Captain Morgan).
If you do not have thyme, add rosemary instead. You can also replace rosemary with thyme.
Use a little ketchup if you think the taste is a little too harsh - it gives a good sweetness. Alternate add a little sugar.