1/3 cup pure maple syrup 2 Tbsp. finely chopped shallots or green onions 3 Tbsp. German stone ground mustard 2 Tbsp. red wine vinegar 1 Tbsp. canola oil 1/4 tsp. freshly ground black pepper 1/8 tsp. salt
Combine all ingredients in a medium bowl, stirring with a whisk.