The original Green Goddess dressing contains lots of tarragon. Feel free to experiment with other different fresh green herbs such as tarragon, cilantro, chervil or mint.
For a dairy-free version, use ½ cup silken tofu in place of the yogurt and increase lemon juice to 3 Tablespoons. I’m sure you could also substitute ½ of ripe avocado, but I haven’t tried that.