Said assembly (1) comprises a patterned stencil layer (300), which comprises at least one patterned stencil shape (301) matching said at least one non-planar cast shape (202) of said mould (200), each patterned stencil shape (301) comprising a patterned stencil cut-out (302), andsaid patterned stencil layer (300) is configured to be positioned in said mould (200) such that a sprayed edible compound pattern (101) is formed on said non-planar cast shape (202) of said mould (200) when an edible compound in its liquid state (102) is sprayed through said patterned stencil cut-out (302) of said patterned stencil shape (301).
