We say French instead of Swiss because the French took over the dish so eagerly, together with the great Gruyère that makes it distinctive. They internationalized it, sent it around the world with bouillabaisse and onion soup, that celestial soupe à l'oignon on which snowy showers of grated Gruyère descend.
To put the Welsh Rabbit in its place they called it Fondue à l'Anglaise, which also points up the twinlike relationship of the world's two favorite dishes of melted cheese. But to differentiate and show they are not identical twins, the No. 1 dish remained Fromage Fondue while the second was baptized Fromage Fondue à la Bière.
Beginning with Savarin the French whisked up more rapturous, rhapsodic writing about Gruyère and its offspring, the Fondue, together with the puffed Soufflé, than about any other imported cheese except Parmesan.
Parmesan and Gruyère were praised as the two greatest culinary cheeses. A variant Fondue was made of the Italian cheese.
Parmesan Fondue
3 tablespoons butter
1 cup grated Parmesan cheese
4 eggs, lightly beaten
Salt
Pepper
Over boiling water melt butter and cheese slowly, stir in the eggs, season to taste and stir steadily in one direction only, until smooth.
Pour over fingers of buttered toast. Or spoon it up, as the ancients did, before there were any forks. It's beaten with a fork but eaten catch-as-catch-can, like chicken-in-the-rough.