Movingfinger loves Spam and lima beans.
I drool for fresh (*NEVER * canned or frozen) asparagus with shrimp (either quickly poached and peeled, or sauted with a bit of garlic.)
If starving, I’m sure we could force down the other’s ‘treat’, but I think it would have to come to that.
'Cuda
Mr. Lissar will eat an entire can of salmon or anchovies straight. I hate both.
He hates and fears onions in any form, and I love them. I have been known to eat sauteed onion and cheese sandwiches. I can’t cook onions when he’s home, or he throws up.
Dried chilli squid - sold like potato chips in Asian supermarkets.
Pork floss.
Black pudding.
Escargot.
Pork pie - English delicacy of spiced cured pork & pork fat encased in aspic jelly and shortcrust pastry.
Peanut butter, banana, and bacon sandwiches. With Tabasco sauce.
She’s so fussy. 
I love asparagus. He can’t stand it.
I love chocolate and banana milk shakes, and chocolate covered frozen bananas. Yum. Nope, not for him.
He loves Braunschweiger and liverwurst. Blech.
That’s me!! Mr. Armadillo eats tomatoes like candy, but the nasty, cold, slimy, gelatinous tomato jizz makes me want to ralph. Strangely, I like tomatoes, he just has to suck the goo out first. He also likes V8, the smell of which turns my stomach.
He hates bananas. He claims it’s a texture thing, but he won’t eat a home-made chocolate banana milkshake. I love them and eat one almost every day.
The other biggie is olives… I love them, any kind, any way, in any dish. The smellier, the better. Give me a bowl of kalamatas and I’m in heaven. He won’t come near me for hours afterwards.
This is poetry! Imagine it being said by the guy with the bass voice who reads movie trailers, in heavy, dramatic style. Comedy gold!
Brewers yeast. I don’t eat it, I mix it in a drink. But one whiff and everyone understands why I am the only one who consumes it.
He doesn’t like cream sauces and he doesn’t like anything that combines fruit and meat. Those two of my favorite categories of food. But we both LOVE cheese and wine!!!
shrugs Meat.
**Braunschweiger Ball **
*Even people who think they hate braunschweiger may like this. *
1-pound package braunschweiger
2 tablespoons minced onion
1/2 cup Miracle Whip salad dressing
1 teaspoon ground pepper
4 tablespoons dried parsley flakes
Cut braunschweiger into chunks and soften. Add the ingredients in the order listed. Mix until it becomes a smooth paté. It will be soft. Chill for one hour, then form into a ball. Roll in dried parsley. The parsley will absorb the oils in the meat. One round ball serves approximately 20.
Hmmm.
I love olives - the green kind with the pimiento? I eat them right out of the jar. He hates them.
He loves chili - I threw up last night just smelling it. Chili is foul. 
Marmite. My wife absolutely hates it, but so do quite a few people She is also not a fan of eggs.
I can’t think of anything she eats that I don’t like, but the again I can’t think of anything at all that I don’t like eating. Everything in this thread sounds pretty good to me!
Between myself and my SO, I am definitely the more adventurous eater, but I won’t bother mentioning all the things I like that 90% of the American populace hates, since they’ve mostly been done already: liver, Spam, anchovies, etc.
I did want to mention that my SO hates all “fruity-smelling” fruits with a passion–banana, peach, mango, pineapple, pear, etc. This limits not only our shared meals but also my choice of body washes and shampoos
I like grits and fried alligator (not together), and my husband finds them revolting. OTOH, my husband likes fried baloney. I can’t be anywhere near the house for at least 5 hours after he’s cooked that mess.
I’m proud to see that Jakeline has now publicly recognized my superior tastebuds and my resulting loathing for chocolate. It’s good to have that out there for everyone to see. 
Someone else also mentioned olives, and I despise olives. However, she (and her whole family) take pleasure in bringing stuffed olives to any gathering, and/or sticking olives on their fingers and orally inhaling them. Only a tight control over my gag reflex can keep me from loosing it when witnessing this travesty.
Outside of tomato “boogers” (her usual term for it, although “tomato jizz” is my new favorite), I can’t think of anything I enjoy that she hates. Unless you count the taste of Robitussin, which, while technically not food, tastes wonderfully like grape soda to me. She, on the other hand, has to hold her nose whenever ingesting it, chase it with a ton of water, and still can’t suppress a gag.
I love red meat, the redder the better. He thinks this is disgusting.
But he eats okra! Oh my gosh, that stuff is so foul. It’s like snot. Everyone said “oh, try it fried. It’s much better fried.” So I tried it fried. It’s crunchy on the outside, and still snot-like on the inside. Barf.
SPAM. Eurgh. Disgusting. I can’t tell you how many times it’s been banned from my pantry. Right along with canned cheese, which he insists on putting in blue box mac & cheese.
OTOH, he has no appreciation at all for hamachi nigiri. It’s his taste buds. He’s ruined them with Campbell’s bean soup on crackers.
My fiancée eats nattô (fermented soybeans) and uni (sea urchin roe). One smells like garbage, the other tastes fine but the texture literally makes me gag every time I’ve tried to eat it. I’ve referred to nattô-maki as kuso-maki (shit-rolls) before, so strong is my distaste. I can eat just about any other Japanese food–and believe me, there is some revolting stuff out there–but these two are things that I won’t even try anymore.
I haven’t found anything that grosses her out. Among the Japanese people I know, it’s hard to find a food other than certain kinds of cheese that makes some of them gag, and she likes cheese.
You forgot liverwurst, pickle and cheese sandwiches and Vienna Sausages.