Bring to the boil, then simmer gently for a further 2-3 minutes, until the sauce thickens slightly.
Turn off the heat and serve the pork. I like to serve mine with buttery mashed potatoes, green vegetables - such as green beans and broccoli - and a sprinkling of chopped parsley and black pepper.
This meal is best eaten straight away but you can quickly cool and any leftovers. Reheat in a frying pan with a lid over a low-medium heat, or you can reheat in the oven in a covered baking dish, at 200C/400F for about 15-20 minutes, until piping hot throughout. You will probably need to add a splash of stock and/or a little more cream to loosen the sauce.
Ingredient swaps:
Try wholegrain mustard instead of Dijon for a milder sauce. Use a heaped rather than a regular tablespoon (otherwise the mustard flavour will be lost)
Try using crème fraiche instead of double (heavy) cream for a lighter sauce.
How to scale up and scale down this recipe:
This can be doubled to feed a crowd. You'll need to fry the pork medallions off in two batches, and bubble the sauce for a few minutes longer to thicken.You can also halve the recipe to serve 2 (or one hungry person). Cook in the same way, for the same cooking time (the sauce may take a minute or two less to thicken), just halving all the ingredients.Nutritional information is approximate, per serving, not including serving suggestions of mashed potatoes and green beans (this recipe serves 4).