In a medium sauce pan set over high heat, add the sausages and the chardonnay. Bring the sausages and chardonnay to a boil. Once they start boiling, boil for 15 - 20 minutes or until the sausage is cooked through.
Remove the sausages from the chardonnay and place on a foil-lined rimmed baking sheet. Broil on high for 3 minutes, then stir/ flip the sausages. Broil on high for another 3 minutes and flip them again. Finally, broil for 3 final minutes so that all sides should be crisped and browned.
Combine all ingredients for the mustard dipping sauce in a small bowl. Serve alongside the warm sausage bites.