Start by separating the fat and the drippings in the glass from the pork roast. If you’ve made a duck roast, do the same. You can easily use flavorings from both roasts in this sauce.
Begin by adding fat to a pot. It’s ideal if you have fat from your pork/duck roast, but otherwise, you can use butter. Let it melt and, when it bubbles, add flour while whisking. It will form a smooth mass and should be stirred for a couple of minutes. This is called a roux, and the longer you cook it before adding liquid, the more flavor it gives. If cooked too long, it will become very bitter.
Add a little pork stock/roasting drippings at a time while whisking vigorously. If you add too much at once, it will clump.
Once everything is dissolved and has a smooth consistency, add cream, still stirring continuously.
Now add gravy browning as needed until the sauce is dark.
Add bay leaves and a little salt and pepper.
Taste the sauce and add cream and redcurrant jelly if needed.
Let it simmer a bit longer while stirring for a couple of minutes.
Add a bit more pepper and redcurrant jelly.
Remove the sauce from the heat and let it stand until just before serving. This brings out the flavors.
Return it to the heat and warm it up.
Taste and adjust with more salt, pepper, or redcurrant jelly if you think it lacks flavor.
Remember to remove the bay leaves, and note that the sauce doesn’t need to be piping hot; it actually tastes best around 60 degrees Celsius (140 degrees Fahrenheit).
Enjoy.