Allumettes à la reine are puff pastry strips topped with chicken breast and truffle.
To make them, a ball of puff pastry is rolled into a sheet ½ cm (¼ inch) thick, then spread with a topping consisting of minced chicken breast and truffle blended into velouté sauce.
The sheet of pastry is then cut into rectangles 7 to 8 cm (3 inches) in width.
The pastry rectangles are then baked for 15 minutes at 200 C (400 F / gas mark 6.)
Sources
New Larousse Gastronomique. Paris: Librairie Larousse. English edition 1977.