I can tell you, this stuff is so good, you could put it on a your stinky old gym socks and it would make them at least palatable.
Also, if you care about such things, it is sure to impress if you make it for a date or some friends. It is easy as pie. Actually, its much easier than pie which, I am told, can be hard to master. This? Not so much.
You will need
1 cup mayonnaise
one bundle of scallions - chopped
1 cup coarsely chopped fresh basil leaves (it's one large bundle of basil, essentially)
1 lemon - juiced
1 clove of chopped garlic
1 teaspoon anchovy paste
heavy pinch of kosher salt
1 teaspoon freshly ground black pepper
1 cup sour cream
Add the mayo, one bunch of scallions, basil, garlic, lemon, anchovy paste, salt and pepper into the food processor and mix. When the basil and scallions are little shards of deliciousness, add the sour cream and pulse again. Taste for salt, but it's this simple. Also, again, people will be impressed.