NORTH  9876  A  KT86  J932  J5  JT64  AJ5  T876    AQ43  K853  Q  AK54    KT2  Q972  97432  Q

Dealer: East    Vul: EW   MP Scoring West 1 X North 1N1 Pass East 1 4 Pass South Pass 5Pass

West led 4th best heart, won in dummy perforce.
Dummy's club continuation East won with the K.
East's 4th best spade was ducked by declarer and won by West.
A spade to East's A and another West ruffed.

West continued with a club ruffed by declarer, finally 'in control' and in hand.
West rose to win the A and returned a heart.
No alternative seemed better than discarding a dummy spade in hopes West somehow held the K, East having leapt to 4 on an envisioned  AQ43  8543  Q  AK54

Down 4 doubled was -800 against a 4 contract that at many tables was down 2.

"What kind of sandwichs are being serving here?" wondered South.
"Looks like you have much too much money for the meagre sandwichs we have to offer." countered North. "Perhaps you should save your money and invest it in other activities."

South was expecting a North hand with at least 9 cards in the two suits OR if only 8, then everything on offence.

Was the pair to vary their Sandwich standard based on vulnerability? Don't all pairs?

South paused for thought before bidding 5, thinking that the matchpoint PASS alternative was so close to equal that the T instead of the 9 would have tilted the scales in the other direction. Perhaps the 8 instead of the 9 would have made it a quicker 5 down 4 doubled.

What kind of standards do you have for such bids with each of your partners?

Does your Sandwich 1N promise at least 9 cards in two suits? Does it promise 10?
If only 9 cards, does it suggest strongly 5 of a minor and 4 of a major rather than 4 of a minor and 5 of a major, given a more preemptive 2 Michael's with 9 card alternative?