Here is a list of what Victorian people should eat, versus what people did eat. In the 2nd column, right, are quotes from a [1872] Victorian doctor :

What the Victorian doctor thinks people SHOULD EAT at BREAKFAST	"This stomach knows perfectly well what it needs...at breakfast...a moderate piece of steak, a slice or two of stale bread, and a baked potato."
What the Victorians actually DO EAT at BREAKFAST	"First, a great mass of greasy buckwheat cakes, now, a swash of scalding hot coffee, again buckwheats, more coffee, sausage, hot biscuit saturated with melted butter, buckwheats, coffee, sausage, hot biscuit, and so on an so on for half an hour. And here we have an enormous mass of hot, greasy, doughy, indigestible stuff swimming in hot coffee.
What the Victorian doctor thinks people SHOULD EAT at NOON MEAL	"...at dinner, roast beef or mutton, with bread, potatoes and other vegetables.
What the Victorians actually DO EAT at NOON MEAL	"Now, what is the conglomeration that comes rushing down that red canal? Turtle soup, fish, beef, duck, plum pudding, pie, nuts, raisins, coffee, and several condiments; with this hotch-pitch, ice-water, ice-cream and wine.
What the Victorian doctor thinks people SHOULD EAT at SUPPER	"For supper, the stomach wants nothing...
What the Victorians actually DO EAT at SUPPER	"...it gets hot biscuit, butter, cake, preserves and strong tea."
	--Dio Lewis, A.M., M.D., 1872

Contrary to what Dio Lewis, M.D., above, says about Victorian overeating, there is a hint that the Victorians commonly left enough uneaten food on their plate to have Herbert Hoover address the issue during World War I.

Recently someone on the web researched the origin of the "clean plate club" (If you never heard of it, ask a parent). During WWI the USA citizens were asked by the government not to waste food. People in the 1910s were to only serve on their plate what they could finish eating, and NOT, as many think today "however much you pile on your plate - finish it!"  Please try to stop yourself! lol.

People during WWI had left-over Victorian habits (pardon pun) of commonly leaving food uneaten on their plates. To back up this idea, here is a quote from the book, Buckeye Cookery, 1877:

"Somebody has said that a well-to-do French family would live on what an American household in the same condition of life wastes, and this may not be an exaggeration."