Maybe it's just from watching a lot of Food Network shows, but I always like to see creative or interesting fantasy foods in games. So, whether as a player or DM, what are some foods you've seen in game or created yourself? I'll start with one I made for a campaign I'm running...

Spicy Cockatrice WIngs! Cockatrice is normally not safe to eat because of the petrifying property they have, but that can be neutralized with spices so intense that the PC needs to make a CON saving throw or take fire damage. After eating the wings partially petrify the stomach and prevent the PC from needing to eat anything for the next 5 days.

Quote from TransmorpherDDS >>

Maybe it's just from watching a lot of Food Network shows, but I always like to see creative or interesting fantasy foods in games. So, whether as a player or DM, what are some foods you've seen in game or created yourself? I'll start with one I made for a campaign I'm running...

Spicy Cockatrice WIngs! Cockatrice is normally not safe to eat because of the petrifying property they have, but that can be neutralized with spices so intense that the PC needs to make a CON saving throw or take fire damage. After eating the wings partially petrify the stomach and prevent the PC from needing to eat anything for the next 5 days.

 here are a few i have made 

the blue dragon 

a wine made with special grapes forces a con save or take lighting damage on a success you gain advantage on int checks for an hour 

chaos brie cheese 

upon being eaten the consumer must make a wisdom save or roll on the wild magic table 

holy chicken wings 

for 8 hours after eating the consumer knows radiant word 

Zam - the dwarven equivalent of lembas.  It's flour made from a special breed of barley, mixed with yak butter and whiskey into a little ball of paste, eaten with your fingers, and washed down with more whiskey.  Absolutely guaranteed to not, itself, kill you (although it has been indirectly responsible for several deaths).

Faerie Cream
A special cream made by pixies and full of freshly picked berries. Its taste is perfectly soft, and it grants you advantage on saves against being charmed.

Puny Mortal Stew (this one is a draconic favorite)
Grab your favorite humanoid race, chuck 'em in a pot of water, toss in some basil and shambling mound, and you're golden. Just as a tip, heating the stew with your breath weapon helps to bring out the flavor.

I honestly can't remember the origin of this (it sounds kind of Terry Pratchett-esque to me, but I can't be sure), but I read a book once which featured something called "Dwarven Black-Bread", which was a "magical" bread which helped people to survive hunger. Apparently, just looking at this bread was enough for you to reconsider whether you were really all that hungry!

Quote from ThorukDuckSlayer >>

I honestly can't remember the origin of this (it sounds kind of Terry Pratchett-esque to me, but I can't be sure), but I read a book once which featured something called "Dwarven Black-Bread", which was a "magical" bread which helped people to survive hunger. Apparently, just looking at this bread was enough for you to reconsider whether you were really all that hungry!

Terry Pratchett dwarven bread isn't magical. Just well baked and about as hard as a rock.

As I recall, Dwarven Bread in Discworld is better known for its value as a weapon than as a foodstuff.

There's an Italian food called lardo di colonnata which is pork fat cured in marble containers for up to two years, then sliced thin and eaten. I'm planning to introduce this into my homebrew setting (which is based on Italy) but make it into an ooze. Or maybe, there are two containers, one is food and the other is ooze. 

Eldritch - Whiskey made by the Elf folk similar to Scotch. It isn't magic, just whiskey.

Grogur - Hard fermenting cheese made from giant goats. That gives it the benefit of lasting longer than most other cheeses without being cased in rind/wax. Traditionally made by Giants (especially Goliaths).

In the OotA game I'm running, the party killed a bunch of giant fire beetles and decided to harvest the meat and dry it into jerky. So I had some fun coming up with ways of using fire beetle jerky as an ingredient, as the monk has proficiency with cooking tools. Fire beetle hash with mushrooms, fire beetle chow mein, fire beetle gravy...

This site has an extensive list sourced from various books: 

http://thecampaign20xx.blogspot.com/2015/07/dungeons-dragons-great-list-of-food.html

iron rose petals:strange rose petals that once eaten slowly and painfully kill you from the inside out as they turn into a mind controlled puppet made of iron

I've been playing with interesting food in my campaigns. The campaign I run introduced Dragonborn as having a very asian-centric way of serving and eating food (including chopsticks) and my whole teifling nation bases their food around Italian/mediteranian food (including pizza, ironically during a time where we were meeting in person and served pizza during DND! made for fun role play). I'm right now playing a chef type character in a Theros based campaign that has wild west themes added in so looking for ways to incorperate my character learning about different food.

In one small section of the varovian nation,They may feed you a tasty dish made from the flesh of emerald dragons.This dish imbues to eater with psychic power and allows to mimic the breath weapon of the creature.In other words,they just get really loud.

Roasted Owlbear Gizzard

The fact that owlbears are the most common monster known detracts not at all from the exotic idea of eating the roasted second stomach of a mystical creature.

Have you read the hero’s feast cookbook? It has actual recipes for dnd food.