6. Sea Salted Duckfat Caramel
> Establishment: Duckfat
> Location: Portland, Maine
Actual duck fat figures in many of the dishes here, but not, fortunately, in the shakes. The sea-salted caramel version is considered a must — and you can always order some duckfat fries to dip into its salty-sweet perfection.
7. Chocolate Cake
> Establishment: Portillo’s Hot Dogs
> Location: Addison, Illiinois, and more than 60 other locations in eight states
Portillo’s has come a long way since 1963, when it started as a hot dog stand called the Dog House in the Chicago suburb of Villa Park. Along the way, the chain became famous for its milkshakes and also for its chocolate cake — so of course they had to blend the two together into an incredibly decadent treat.
8. Chocolate Malt
> Establishment: Old Mill Tasty Shop
> Location: Wichita, Kansas
Sometimes simplicity is best, and the old-fashioned chocolate malt at Wichita’s first soda fountain, opened in 1932, is as good as shakes get. Food TV host Alton Brown liked it well enough to tweet out an image of the malt and the machinery that made it.
9. Golden Summer Fig
> Establishment: Creole Creamery
> Location: New Orleans, Louisiana, and Bay St. Louis, Mississippi
This popular dessert shop will turn any of its homemade ice creams into shakes or malts, and the possibilities are many. One creation that’s unique, however, is this seasonal combination of saffron ice cream and bits of fig preserves.
10. Mountain Mud Slide
> Establishment: The Corner Shop
> Location: Bramwell, West Virginia
An old-style ice cream parlor in a picturesque 19th-century town, the Corner Shop offers a number of milkshake options. A perennial favorite is the rich, thick, chocolatey Mud Slide.