RichM Best thing about Xmas is the Xmas sarnie. This is looking at being a winner this year (this is sort of a restaurant…)
Dear Lord, hell fucking no!
That won’t be alone in ruining a “Christmas Sandwich” with mayonaisse. To start, most sandwiches with mayonaisse are ruined by mayonaisse. But also, you don’t have fucking mayonaisse on your plate for a Christmas dinner (unless you’re some kind of council estate heathen), so there shouldn’t be mayonaisse in any Christmas sandwiches either.
Gravy, cranberry sauce and stuffing should provide plenty of moisture and aroma already.