Make a purée by mashing up ready-dressed vegetables, together with a little milk, cream or gravy and some seasoning. The most suitable vegetables are cucumbers, artichokes, onions, sorrel, green peas, tomatoes, lentils, mushrooms, asparagus tops, potatoes, truffles or turnips. Prepare some EGGS by beating them very light. Pour them into a nice hot frying pan, Containing a spoonful of butter; spread the purée upon the upper side; and when perfectly hot, turn or fold the OMELET together and serve. Or cold vegetables may be merely chopped small, then tossed in a little butter, and some beaten and seasoned EGGS poured over.
The Whitehouse Cookbook, by Mrs. F.L. Gillette (Year 1887)