INGREDIENTS
56 g
butter
2 larges
onions
2 tsp
sugar
1/2 cup
red wine
2 sprigs
thyme
1 large sprig
sage
2 cups
strong beef broth
1 tsp
worcestershire sauce
1 tsp
salt
1/2 tsp
mustard
1/4 tsp
pepper
1 tbsp
balsamic vinegar
1 tbsp
cornstarch
2 tbsp
butter