To make 4 ham and cheese tea sandwiches, you'll need 8 ham circles, 8 cheese circles, and 12 bread circles.
My secret to great tasting sandwiches is to use Japanese mayonnaise which tastes better than regular mayo. You can use regular mayo though if that's what you have.
The mayo and mustard do two things: they bind the layers together so it's much neater to pick up AND it keeps the sandwich from being too dry.
Frozen bread cuts better. Freeze bread then cut out circles. You'll get nicer edges that don't look as pinched as you would with room temperature bread.
Serve these tea sandwiches with cornichons or mini pickles as they are tart and balances out the richness from the ham and cheese. The cocktail forks can be used to eat the cornichons.
Feel free to serve these without cocktail forks when making them for kids.
To pair these sandwiches with tea, serve black tea like Earl Grey or English breakfast tea since they'll hold up well with the richness from the ham and the Swiss cheese.
To make sandwiches ahead of time, assemble sandwiches the night before (but don't skewer on the cocktail forks until the day of) and loosely cover them with wax paper then a damp paper towel in an airtight container in the refrigerator. This will keep the sandwiches fresh overnight without drying out the bread. Take tea sandwiches out of the refrigerator for at least 15 minutes before serving. Tea sandwiches should be served at room temperature.