Basil Garlic Buttermilk Dressing

I've become a big fan of making my own salad dressings.  This is an incredibly versatile dressing that I found on Epicurious. The first time I made it, I had all ingrediants and it tasted awesome.  Tonight, my basil was not as fresh as I would have liked and I substituted a tbsp of shallots and several generous shakes of dried dill and it was still amazing.  The flavors will reach their peak around day 3 - but that is also as long as it will last in the fridge so make sure to use it up by then!

1 garlic clove
1/4 tsp salt
2/3 cup well-shaken buttermilk
1/3 cup mayonnaise
2 tbsp finely chopped fresh basil

Mince garlic and mash to a paste with salt using a large heavy knife. 

Whisk together buttermilk, mayonnaise, basil, and garlic paste in a small bowl. Chill, covered at least 1 hour before serving.