Creamy Basil Dressing

This salad dressing smelled so good and tasted so delicious that I ate it with a spoon right before I poured it into a mason jar for the fridge.  Then I couldn't wait until lunch to pour over my salad - and it is really the best salad dressing I've ever eaten!  Not sure I want to buy bottled dressing any more...

In a blender, place...

1 c mayo
1 c chopped green onion (white and green parts)
1 c chopped fresh basil leaves
1/4  c fresh lemon juice
2 tsp chopped garlic
2 tsp anchovy paste (it's on the tuna aisle)
2 tsp kosher salt
1 tsp freshly ground pepper

...and blend until smooth.

add in...

1 c sour cream

and process till just blended.

refrigerate (can add a bit of milk if it needs to be thinned)