In a food processor, combine the Mayonnaise Nouvelle, roasted garlic, fresh garlic, green onion, parsley, oregano, basil, and chives. Process until the garlic and herbs are pureed.
With the processor on, slowly pour in the buttermilk and season with the salt and pepper. The dressing will be thick and creamy.
This dressing will keep for 2 to 3 days in an airtight container in the refrigerator.
First, make yogurt cheese by draining the yogurt as follows. Line a colander with cheesecloth and place in a bowl. Spoon the yogurt into the colander. Refrigerate and let drain for at least 1 hour. Discard the liquid in the bowl.
In a food processor, combine the yogurt cheese, tofu, and garlic. Process until the mixture is pureed, about 3 minutes. Add the remaining ingredients. Process again to combine, about 3 minutes. Adjust the seasoning with additional salt or pepper, to taste.
This dressing will keep for up to 2 weeks in an airtight container in the refrigerator.