La Poste prepared a philatelic souvenir after the Croissant au beurre stamp was voted the most attractive French stamp of 2025. The 2026 souvenir pairs an offset-printed card with a gravure-printed stamp sheet. The stamp retains a croissant scent.

Frédérique Vernillet designed the motif from a photograph credited to Equitable and C.HEL; Ségolène Carron arranged the souvenir. The folded souvenir measures 125.25 × 112.5 mm, and the stamp 40.85 × 30 mm. La Poste specified 20,000 copies at €5, with a preview at the Paris autumn salon.