Aaron is the peacemaker, as usual, but this is an argument that will not be settled by compromise.
"France. Always and forever France. How can you argue against the country that brought us burgundy, chardonnay, both pinot gris and pinot noir, and petit syrah?"
Emily has a point, waves her glass of white under Aaron's nose, but Dave has his feet planted and his arms crossed.
"No one does wine like Italy. Chianti, moscato, sangiovese, montepulciano, sciofetino - and no, you cannot claim pinot gris, we invented pinot grigio."
They both look so stubborn and ridiculous, both a little drunk - Emily with Aaron's tie draped around her neck, Dave with one sleeve rolled up and the other still turned down - that Aaron bursts out laughing. The entire dining room looks at them, but Aaron sets his glass on the counter so he doesn't drop it, and snickers until the both of them stop glaring.
They get thrown out of the bistro doing the tasting, but it's not for arguing so much as public lewdness. Aaron makes note to check if the bathroom stall doors lock next time.