Here a quick guide to some exotic cuisines from my various worlds 

Coulmeil (from the world of pastry planet)

The cuisine here is mostly plant based,with lot's of grain and beans for protein.It uses a massive quantity of honey,so must of the food is incredibly sweet.

The dragonborn of the draconic plane

These guys live on the draconic plane,full of dragons and incredibly dangerous plants.The cuisine is primarily based around a variety of tough and flavorful dragon meat,which is usually salted and spiced.Most of the very little plants in their diets comes from, a couple of established grains and fruits,all of which have bitter and unusual tastes.They also have a shit ton of spices,I mean a shit ton of them.Everything is heavily spiced,to the point of badly harming most creatures.Dragon blood wine is the primary form of alcohol,and is made using the blood of certain minor dragons,mixed with a many species of grapes (most of which come from the winding swamps or the necrotic bog).The dairy products they use are from a single species of plant,the milk tastes similar to coconut milk,with an touch of spice.The milk is fermented with black dragon blood to make a simple but rich cheese.

I had read somewhere that, due to dwarves' poison resistance, their cuisine would probably include may things that would typically harm a human. Piggybacking off of previous ideas in the thread, very poisonous mushrooms or underground insects. I run dwarven cultures as having a reputation for bland food, because they just don't risk putting anything with "flavour" in their food for guests, because they don't really know how much poison other species can handle. As well, a significant portion of dwarves (in the world I'm running) live fairly isolated from everyone else, in strongholds, so they don't really have a chance to disprove that reputation.

I'd imagine that Tritons would have a largely seafood-based diet. They'd mainly eat fish, though exactly what kinds would probably depend on exactly where in the ocean they lived. Tritons living closer to the surface where plants can grow might also be able to add kelp, seaweed, or plankton to their dishes, but it would mostly be meat-based. Outside of fish, other sea creatures like octopus, snails, starfish, clams, and crabs might be common choices. 

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Tieflings can eat anything a human can. But they also enjoy hot coals from exotic woods (those with Fire resistance anyway), roasted crickets on a skewer or by the bag. and literally anything that moves and they can cook...like skunk.

 

It sounds like you have a very western view of what human foods are! Humans will eat basically anything which doesn't kill you, and will also go out of their way to eat things which are actively trying to kill/harm you but fail - spicy food, narcotics, hallucinogens, alcohol... Heck, a Japanese delicacy is a pufferfish, which if you cook it at all wrong is extremely poisonous. I guess they must have cooked it right the first time, otherwise they would have stopped after the first few attempts killed whoever ate it...

 I agree with you... but I don't know if pufferfish is as good an example as... Miso or tofu.  But the bias does seem to be very [southern] European. 

Also... it seems like Japanese fantasy writing includes a lot more monster eating and cooking elements than western fiction... which I think is really fun.  I'll admit that I was surprised when alligator and snapping turtle was first given to me, but it's delicious... as is rattle snake (the only snake I've ever tried).   Maybe it depends on the main diet of the animal? 

 Yeah, it really depends on the main diet of the animal, and that's not just true for carnivorous ones.  A cow that's fed primarily corn tastes substantially different from one that's fed primarily grass.

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Tieflings can eat anything a human can. But they also enjoy hot coals from exotic woods (those with Fire resistance anyway), roasted crickets on a skewer or by the bag. and literally anything that moves and they can cook...like skunk.

 

It sounds like you have a very western view of what human foods are! Humans will eat basically anything which doesn't kill you, and will also go out of their way to eat things which are actively trying to kill/harm you but fail - spicy food, narcotics, hallucinogens, alcohol... Heck, a Japanese delicacy is a pufferfish, which if you cook it at all wrong is extremely poisonous. I guess they must have cooked it right the first time, otherwise they would have stopped after the first few attempts killed whoever ate it...

 I agree with you... but I don't know if pufferfish is as good an example as... Miso or tofu.  But the bias does seem to be very [southern] European. 

Also... it seems like Japanese fantasy writing includes a lot more monster eating and cooking elements than western fiction... which I think is really fun.  I'll admit that I was surprised when alligator and snapping turtle was first given to me, but it's delicious... as is rattle snake (the only snake I've ever tried).   Maybe it depends on the main diet of the animal? 

 Yeah, it really depends on the main diet of the animal, and that's not just true for carnivorous ones.  A cow that's fed primarily corn tastes substantially different from one that's fed primarily grass.

 So what is the D&D version of Wagyu beef!?  lol. 

Human Barbarian <crying in pleasure> 'What kind of animal IS THIS!  It's SO DELICIOUS!"

Gnome Epicure <smug>:  It's grade AAA-7 beef!

Human:  What!  That's impossible!  Our cows never tasted like this!

Gnome:  Well... This monster cow was fed only ambrosia, flowers, and fruit.  And Dryads give them full body massages four times a day...

I guess centaurs would be omnivorous, but the existing lore indicates they have to eat more than other races. They probably also have two stomachs so that's not entirely surprising. I guess logically it would be a mix between human and horse-like diets but I guess the human mouth wouldn't be well-suited for grazing on hay or grass. But it could still consume fruits and vegetables, which horses love. They also tend to live in the wilderness so hunting would make sense as a source of food. So I'd say a mix of meat with apples, carrots, and other plant-based foods depending on what happens to be available at the time.

Well... Vikings and Scotti are sort of specific to water.  Cossacks are master horse nomads, no?  I think they become Centaurs in D&D.

In earlier editions when it took longer to level up, there was a wider variety of lower level humanoids that were all fighting with each other as well as human/demi-human civilization.  Maybe it was because of the Cold War or something, so the notion of post-WWIII (or fantasy) destroyed civilizations didn't seem unreasonable... sort of like the dark ages.  I sort of miss Gnolls and caves full of weakish trolls some tougher monsters just tore to pieces to get them to regenerate from parts... then fed them scraps.

{Is it bad that I'm nostalgic about getting torn to bits by a mob of weak ass trolls?} 

I know that's D&D game lore, but centaurs in Greek mythology were more noble and civilized than simple nomads.  I don't think 'fairy' races really need a realistic biology... 'magical' plants and specialized domestic animals are ok with me.  I mean, most bronze and early iron age peoples didn't have a very diverse diet... Romans and Chinese (which I'd put Japanese with) are exceptional. 

If there's anything all cultures philosophers agree on, it's that one of the secrets to a long and healthy life... is a boring and moderate diet.

Aside from Heracles's teacher

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I know that's D&D game lore, but centaurs in Greek mythology were more noble and civilized than simple nomads.

Centaurs in Greek mythology were mostly wild and untamable barbarians.  There were a few exceptions, but not many.

-I'd imagine certain races, mostly those with fire resistance, but also some humans, gnomes, and halflings, would enjoy those REALLY spicy hot sauces that you sometimes have to sign a medical release form for

-Dwarves would probably have access to certain kinds of blind cave fish and amphibians, such as these:

https://en.wikipedia.org/wiki/Cave_salamander

https://en.wikipedia.org/wiki/Cavefish

In my homebrew setting, humans mostly eat bread and meat, while those closer to the mountains eat berries and fruits, too.

Elves often eat berries and breads, as well as select fine wines that are usually soft and fragrant. They do eat meat, but avoid it as much as possible. Their meals are usually light and just barely fill you up, but are still exceedingly delicious.

Dwarves mostly eat mushrooms and hard bread, as the majority of them live in the Underdark. Their diet also consists of many underground fish. Though their food isn't always the most delicious, it's usually non-perishable, or lasts for a long time before spoiling. And, of course, they love ale- the more potent, the better.

Halflings usually thrive on the same food as humans, but with a certain aptitude for baking. Raspberry pies, blackberry lemon tarts, and chocolate sweet breads are all halfling specialities.

Gnomes tend to gnaw on whatever is at hand, so they can go back to their inventing. Besides the gnome cooks, who usually aim to create a new recipe each time they prepare food.

Orcs and Half-Orcs usually live in the jungles to the south, and feast on the many wild animals that live there. They supplement these meals with orange zest or lemon juice, but they almost never cook foods except over a fire. Their roasted meat is superb, and their stew is absolutely scrumptious.

Dragonborn in my homebrew setting are a nomadic people. Because of this, they rely highly on non-perishable foods and native plants and game. However, they're always a sucker for something spicy, and they use spices in the majority of their cooking.

Goliaths live high in the mountains, and they often hunt wyverns or similar creatures for food. Because of this, a single catch can feed a village for days, and they're well known for their exotic meats. They often boil them into stews to offset the cold of the mountaintops.

Goblinoids usually eat specific rations set aside for them, which often consist of meat, some bread and cheese, and occasionally some vegetables. All of their food is heavily seasoned, so it never tastes bland.

Lizardfolk usually feast on the other creatures in their swamp. Their preferred prey is bullywugs, though they're often hard to catch.

Gnomes: I have always thought of them as gathers. Seeking rare berries, but living off a diet of nuts and garden veggies. 

Honestly i think lizardfolk, if adapted to it properly, would make great nomads. They already have the trait of using pretty much every part of a creature, including the bones, which i think nomads would do, as its not worth it to waste anything when food is scarce. I think they'd make good foragers, efficienct hunters (Especially if they make arrows from bones, which would allow them to use bows and arrows rather well), and personally i think it would be interesting to touch on the fact that they could cook pretty much any creature if given the supplies. Like, you could have them make more obscure animals into things like jerky. Plenty of creatures would hunt venison, but a nomad lizardfolk tribe could make moose jerky. Heck, we could see them take some really exotic meats. Fried blink spider legs, grilled abysall chicken cooked over a flame elemental fire. Could get really creative with what affects eating these more exotic things could have on creatures.

Moose are only an exotic food in the 21st Century.  The Algonquin and Scandinavians ate moose regularly for thousands of years.

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Moose are only an exotic food in the 21st Century.  The Algonquin and Scandinavians ate moose regularly for thousands of years.

 Well well, ya learn something new every day. You get my point though, lizardfolk seem like the type who would use stuff other races wouldn't

Yeah, I could see them chowing down on vultures and hyenas: scavengers are one of the few animals that tended to be universally taboo among human cultures.

I could see goblins eating birds , and small mammals 

Dwarves have innate poison resistance, so I'd assume that their cuisine is extra flavorful, with loads of spices and herbs that may be overwhelming or even harmful for other races to attempt eating. I could see rhubarb-leaf salads with yew berries being on the dinner table.

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Dwarves have innate poison resistance, so I'd assume that their cuisine is extra flavorful, with loads of spices and herbs that may be overwhelming or even harmful for other races to attempt eating. I could see rhubarb-leaf salads with yew berries being on the dinner table.

Well spices and herbs are usually used because they are low key antibacterials. That's why I put it with the Hobgoblins because they have so selectively bred themselves to be big, strong and athletic, it could easily have a side-effect like even though they recover from injury quickly, they have really negative effects when it comes to bacteria or spoiled food. Also, most spices require a sunny, humid region to grow in and since Dwarfs live underground in shadowy mountainous regions-- it would be difficult to imagine how they would do that.

But with a poison resistance, the Dwarfs could go the entire opposite way in terms of bacteria and really lean into specializing in fermented food. And since fermentation is how you get beer and other alcohols, it would really tie strong into their whole cultural love for alcohol well. It would still carry the whole concept that Dwarf food is so damn strong that virtually no other race can eat it.

Of course there could always be a situation where the Dwarfs ended up getting really addicted to spices and now pay quite a lot to get them imported and all the rich Dwarfs use spices liberally. Sort of like how the British got addicted to tea from China.

Perhaps that even caused a war between the Dwarfs and Hobgoblins at some point, similar to the opium wars, which can give them a reason for racial animosity that is more grounded  than relying on it being spurred on by divine forces.

Tiefling stuff is really damn spicy due to tieflings having fire resistance. So that causes situation where what is considered spicy for tielfings is considered ghost-pepper level for any other races.

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Tiefling stuff is really damn spicy due to tieflings having fire resistance. So that causes situation where what is considered spicy for tielfings is considered ghost-pepper level for any other races.

 Not a bad idea, though typically tieflings live in other cultures, i do think some would have a fondness for spicy food