Makes about 1 cups (8 servings)
2 cups fresh or frozen raspberries
2 teaspoons Dijon mustard or grain mustard
1 - 2 tablespoon balsamic vinegar
1 tablespoon finely chopped fresh herbs, such as thyme or rosemary (optional) 
1 - 2 teaspoon maple syrup, or to taste
1/4 teaspoon salt, or to taste
1/4 teaspoon black pepper, or to taste