Place raspberries, oil, lemon juice, vinegar and mustard in bowl of food processor fitted with knife blade attachment and process 1 to 2 minutes or until smooth.
Strain mixture through fine-mesh strainer into large measuring cup, using spoon to stir and press the mixture as it passes through the strainer. Discard solids left in strainer.
Stir sugar, salt and pepper into strained dressing.
Notes
Feel free to tweak the proportions of vinegar, oil and seasonings to suit your personal preference.
This website provides estimated nutrition information as a courtesy only. You should calculate the nutritional information with the actual ingredients used in your recipe using your preferred nutrition calculator.