This post is a compilation of some info found, including some stuff I found.
Most of them will be anecdotal evidence, since it's not from digging through the game's code.
The information here will be changed as there's any new discoveries.
This is the TL;DR version, more details below the page break:
- Curry encounters can go into Poké Ball, Great Ball or Ultra Ball.
- Curry encounters draw from the "Wild Encounters Grass" (not overworld) pool.
- It only works in caves along routes, or routes.
- It appears that encounter rates for curry encounters are reversed.
- It is believed that you need a full party of max friendship to yield the highest encounter chance.
- It is believed that Shiny charm doesn’t affect odds of getting a Shiny Curry encounter
- Curry encounters may potentially be able to be shiny - The berries you use may matter (not just curry rank)
- Level of your team matters
? -> It is believed Milcery rank curry gives the best odds of an encounter So general curry steps/instructions: - Use one of the 2,200 ingredients:
Smoke-Poke Tail, Large Leek, Fancy Apple, Boiled Egg, Fruit Bunch, Moomoo Cheese
- Use 10x berries (try to use the best berries you have; they may matter.)
- Use a full team of tiny Pokémon (I recommend Joltik), at max friendship, and at max level.
- You can use whatever website to check for that route, what mon exists in the Grass pool (not overworld pool). Do note the encounter rate seems reversed.
- Only make curries on mainland Galar, anywhere along routes (inc. caves). No wild areas. - Do not do co-op camping.
- Don't press "no" nor the B button when a mon asks to join. There is no confirmation screen for rejecting them; it'll leave then and there and never come back.|
More specific info:
- Curry encounters can go into Poké Ball, Great Ball or Ultra Ball. (source) (will attach image soon)
If your bag does not have Poké, it'll default to Great.
If your bag does not have Poké & Great, it'll default to Ultra.
If your bag does not have Poké & Great and Ultra, it'll default back to Poké.
- Curry encounters draw from the "Wild Encounters Grass" (not overworld) pool. (source)
Most clear example would be Galar Mine No.1
The encounters there draw from the overworld pool, making me question why is there a grass pool listed on Serebii (which if I'm not mistaken, the data comes being mined from the final games), and then I tested which pool curry encounters are pulling from. - It only works in caves along routes, or routes.
So doesn't work in cities or wild areas (including Isle of Armor). - It appears that encounter rates for curry encounters are reversed.
For example, 1% encounters become 99%, etc.
For example, I got a lot more Ferroseed, and a lot more Antique Sinistea, than everything else.
- No spawns from co-op camping
I've never gotten a spawn during co-op camping, be it NPCs or real players. - It is believed that you need a full party of max friendship to yield the highest encounter chance. (source)
My tests below, while mini, does seem to align with this.
? -> It is believed Milcery rank curry gives the best odds of an encounter (source)
Based on the test below, I doubt this is true.
While Dama has a larger sample size, which I would in general think that is a better result, we do not know whether the party members were consistent in all tests. Dama may have used different berries throughout too. - It is believed that Shiny charm doesn’t affect odds of getting a Shiny Curry encounter (source)
While this probably can only be properly verified by digging into the game code, it seems plausible;
Shiny charm only works for wild encounters and eggs, not raids and gifts (looking for the old source).
With that, curry encounters could swing either way.. - Curry encounters may potentially be able to be shiny (source)
While some may argue the video is clear cut evidence of it (being able to be shiny), I'll like to point out that the code to make all mons shiny (commonly used on Edizon) can make Curry encounters shiny. Not saying the video is faked, but I'm saying it's inconclusive evidence, that can be argued either way by bull-headed individuals.
What I'll say, is there is a chance of the devs intending this encounter to be shiny, given that it plays a shiny animation when you talk to it. No other interaction with shiny mons you own in the camp brings forth that animation. Why program in the animation, if it's unintended?
(of course, they could disable it at the end of the day, but it is something regardless ;x)
- The berries you use may matter (not just curry rank)
It's the reason why I used Starf Berries for my test.
Using other berries seem to not give me as many encounters.
Probably based on rarity as seen here: https://bulbapedia.bulbagarden.net/wiki/Curry#Ingredients
- Level of your team matters
Check post below. ? -> Higher rank curry increases chance of encounter
Check post below. Keep in mind of Dama's results too.