Balsamic Dressing

This dressing caught my eye while reading in the magazine section at Barnes and Noble.
The walnut oil adds great depth and richness.  I usually 3 -4 times it to get a good jars worth.

1 tsp. dijon mustard
3 T. balsamic vinegar
3 T. olive oil
2 T. walnut oil


Whisk together briskly.  Stores in fridge for several weeks.