Plum cake fruit in these open tarts or flans is cut into suitably sized pieces and the cake is glazed: red glaze is recommended for red plum and rhubarb flans, whereas apricot glaze is recommended in yellow plum and apricot flans. The German plum cake, known as "Zwetschkenkuchen", can be found all over the country, although its home is Bavaria. In chef Robert Carrier's recipe for it, the base is made from yeast pastry rather than often used shortcrust pastry, because the yeast pastry "soaks up the juice form the plums without becoming soggy". In Italy, plum cake is known by the
Negros fruit dove "feather," and "pous", "foot." The specific name "arcanus" comes from the Latin word "arcānus" "secret." Some authors have suggested that the specimen was either a runt of either the yellow-breasted fruit dove or a "Treron" pigeon, or a hybrid instead of a unique species; however, these views are generally considered invalid due in part to the distinctiveness of the specimen, particularly in the bare skin around the eye, and no proper evidence has suggested that the Negros fruit dove is an invalid species. It is uncertain where the dove should be placed within the genus "Ptilinopus" as the male's plumage,