A peanut is not a nut.
A Brazil nut is not a nut.
Cathead biscuits are suspiciously devoid of feline cranial content.
And Boston is not an ingredient.
And Animal Crackers do not contain any animals. Not even any animal products.
The words “nut,” “berry,” and “fruit” have common usages that do not entirely match their strict botanical meanings.
The Chicken Dinner candy bar contained no chicken, and was seldom served for dinner.
Otherwise they’re just sparkling meatballs.
Because the chocolates look like the fungus.
And continuing the theme, Goldfish crackers contain no goldfish whatsoever.
Hardly any nuts are nuts.
Adding on, city chicken. I still don’t get that one… Supposedly, it was because it was hard to find real chicken in the city, but chickens are a lot easier to raise in a city than pigs or cows.
Similar objection to the Idaho Spud bar
Circus Peanuts.
Much like the Chick-O-Stick candy bar contains no chick, nor stick.
They’re not peanuts. And peanuts are not nuts. 
It’s false nuts all the way down…
Coconut is also not a nut, and contains no cocoa.
There’s no gravel in grits, no dogs in hushpuppies, no elderly witches in haggis, and no toilets, ambulatory or stationary, in Hoppin’ John. Nor is there any hardware in lox.
The mincemeat I make contain 2 pounds of beef chuck, but a whole batch makes a lot more than one pie. The original recipe (my grandmother’s century-old one) calls for a half pound of suet, but I usually leave it out. It’s true there’s more fruit than meat: oranges, lemons, apples, raisins, and candied citron. It’s not my favorite pie, but it’s an interesting contrast of sweet and meaty, with enough warm spices and acid to prevent is being cloying. The sickly sweet meatless crap you can buy in a jar at the grocery store is a pale imitation of the real thing.
Bearclaws contain no ursines, nor parts of ursines.
The pope’s nose is not made from a pontifical nasal appendage.
Long pig is not made from pigs.
Foods named after people aren’t usually made out of those people. Bismarcks, Peach Melba, and Melba toast, beef Stroganoff, etc.
I once checked the label of Butternut brand bread, and found it was made without butternuts, butter, or nuts of any kind. Apparently they still make Butternut bread, but I haven’t seen it in the stores in 30 years.
I love them, and refer to them as Circus Styrofoam By-Products.
.
[old dad joke]:
If olive oil is pressed olives, and peanut oil is pressed peanuts, then what’s baby oil made from?
One of my top childhood food memories was tasting a mincemeat pie with shredded beef in it. I really liked it (I like unusual stuff) and have never tasted it since. Care to share your recipe?