Green Goddess Dressing may sound like an undertaking, but it is actually a very easy dressing to make with either a food processor or blender. The only difference between using one appliance over another is that with a food processor, I add the ingredients in stages, whereas with a blender everything can almost go in at once.
For the food processor method, add the anchovy fillet and clove of garlic down the feed tube with the processor running. That helps to mince the garlic before it gets lost in all the other ingredients. Then, add the fresh herbs and pulse the processor several times to get the herbs chopped up. Finally, add all the wet ingredients except for the sour cream and process until smooth and creamy. The sour cream goes in last and just gets pulsed in the processor to incorporate it gently so that there’s no risk of the sour cream breaking (sour cream can break from high heat OR from being mixed with acid, like the lemon juice in this recipe). For the blender, add the anchovy fillet, garlic and herbs through the hole in the lid while the blender blends. Then add all the wet ingredients, leaving the sour cream for last.