[andrewgilmartin]

Clotted cream is my greatest loss moving from Dartmouth, Devon to the US. A vanilla ice cream cone with clotted cream and a Cadbury flake is unparalleled. And a Mother’s Bread sandwich with clotted cream and strawberry jam being next in line.

[deaddodo]

There's clotted cream (and double cream, treacle, golden syrup, mixed spice, etc) in every major American metro I've ever been in. Look for a British import shop. Or, if you're in New England, SoCal, etc, you might just find domestically produced stuff (Gelson's in LA has it, for instance).