Canapé is the invention of Pierre Albarran, a French auction and contract bridge player, theorist, and author.
Canapé is also the basis of the Roman Club and Blue Team Club systems, which were used by the Italian Blue Team to win many world championships in the 1950s and 1960s.
Some of the early Blue Team players used a "natural" canapé style.
If partner does not raise the spades, the diamond suit is introduced in the next bidding round.
With the hand ♠KQ73 ♥95 ♦AQJ4 ♣J54 a Canapé bidder will open 1♠ and following a 2♣ response rebid notrump.