Higgs and Meakins
An adequate chocolate shop operating in the city of Ankh-Morpork. It was introduced in Thief of Time, where it was frequented by Susan, although she noted "it wasn't even as if they made very good chocolates".
They have a Luxury Assortment comprising among others "Caramel Crunch", "Hazelnut Surprise", Strawberry Whirl" and "Orange Creme". The chocolates rest in brown paper inside black and golden boxes.
"For chocolate that melts in your mouth, not somebody else's", take a stroll round to their factory and shop on Equality Street*(G3). This is just off the Street of Cunning Artificers and is only a strategic retreat away from the Royal Art Museum.
The slogan is a pastiche of the M&Ms slogan "The milk chocolate melts in your mouth, not in your hands"."
Equality Street is a reference to Quality Street, a popular selection box made by Nestles.