The phrase "extra dollop" means to have an additional or extra amount of something, usually a soft or sticky substance like cream, sauce, or jelly, added to a dish or serving. Full definition
Richard Harris is very capable as Dumbledore, as is John Hurt as Mr. Ollivander: while both parts are essentially exposition with extra dollops of whimsy, both actors manage to bring some kind of weight to their dialogue. (rottentomatoes.com)
But I missed that extra dollop of power while running in Eco Assist mode, which did give me 36.4 miles per gallon over several hundred miles of combined city and highway driving. (wardsauto.com)
Serve with a pancetta crisp on top and an extra dollop of creme fraiche with some chopped tarragon mixed in. (strawberriesforsupper.com)