What salads were served in Jane Austen and the Bridgerton households?
Salads
“Persons in health, who feel a craving for salad, may indulge in the enjoyment of it to a great extent with perfect impunity, if not with positive benefit.
Oil, when mixed in salad, appears to render the raw vegetables and herbs more digestible.
Vinegar likewise promotes the digestion of lettuce, celery, and beet-root.

“Endive is very wholesome, strengthening, and easy of digestion; but when strong seasoning is added to it, it becomes an epicurean sauce. — Mayo.”

Recipe for a Winter Salad, by the late Rev. Sydney Smith.
Two large potatoes, passed through kitchen sieve, Unwonted softness to the salad give, Of mordent mustard add a single spoon;
To add a double quantity of salt;
Three times the spoon with oil of Lucca crown,
And once with vinegar, procured from town.
True flavor needs it, and your poet begs
The pounded yellow of two well-boiled eggs.
Let onion atoms lurk within the bowl,
And, scarce suspected, animate the whole;
And, lastly, on the flavored compound toss
A magic teaspoon of anchovy sauce.
Then, though green turtle fail, though venison’s tough, And ham and turkey are not boiled enough,
Serenely full the Epicure may say,-
Fate cannot harm me—I have dined to-day!

The Spanish proverb says four persons are wanted to make a good salad: a spendthrift for oil, a miser for vinegar, a counsellor for salt, and a madman to stir all up.

1859 Hints for the Table by John Timbs.

1800s Typical Salads: Cucumber, Beetroot and Potato, Macedone Salad, Tomato Salad, Jellied Russian and Italian Salads, Prawn Salad, Egg and Lettuce, Lobster Salad and Salad Dumas. From: Mrs. Beeton’s Book of Household Management. via Google Books (PD-150)