Over a low heat soften the onion and garlic without any colour
in a teaspoon of oil or schmaltz until sweet and tender.
Add the vinegar and boil to evaporate fully, followed by the
bay leaf and stock, then reduce by three quarters.
Add the crème Fraiche and Dijon mustard and simmer for 5
minutes, then fold through the grain mustard and a squeeze of lemon
juice.
Season to taste, remove the bay leaf, and keep warm ready to
serve.
Method for the pork:
Season the pork escalopes, brush with a little oil, then cook
in a griddle pan over high heat for 1 to 2 minutes each side.
Remove from the heat and leave to rest for a couple of
minutes.
Method for the cabbage:
Bring a pan of salted water to the boil, add the cabbage, then
blanch for 2 minutes or until tender then drain and divide between
two plates - top with the pork escalopes and the mustard
sauce.