I did the same thing as the other reviews before even reading them! (blended smooth)
Funny, we made the same changes as daneanp . . . used the mini blender to make an emulsion rather than a chunky sauce & also used only 4tbs of oil. Very good. Served on CL's tomato/cuke salad from same p 90, July 2016. Excellent summer salad.
I opted to use my food processor so the peaches became more liquid than chunky (as the photo shows). I only used 4 tablespoons of oil and that seemed like plenty. Nice flavors for our green salad with sliced red onion and crumbled blue cheese. Would make again.