Thai -
Mango and sticky rice can be prepared ahead of time. I might just barely 'dot' it with finley chopped keffir lime leaf. Might be a good example of a different culture's dessert type of item. Anyway, you can slice up the mango ahead of time, keep the rice warm after it's been made, and serve it up in dixie cups w/ plastic spoons.
Korean:
Buy some kimchi, and slop it out. Watch the kids get utterly grossed out (if they even dare try it)
Indian:
Go buy some samosas, or vadi (sp) (the lentil donut type things)
Or, you can make a "curry" and throw it in little dixie cup samplers with rice as well.
Frankly, I'd either go with
A. What's on sale at the grocery store
B. What you're familiar with making
C. What you have on hand at the house to make.
Right now, I could whip up a thai green coconut milk curry with chicken, for about 30 good sized samples, and not have to leave the house for anything.
I could also whip up the same amt of a chicken / potato curry / masala type dish as well.
I could also make some california rolls with a little more effort than the above two suggestions depending on how uppity I was feeling.
Or, you could trek to an Indian grocer, and either buy frozen samosas, maybe even freshly made ones if they have them.
Hit up Tahoora, and buy several diff varieties of their pre-made appetizer things, and grab a few handfuls of their sauce packets to hand out with them.
The mango and sticky rice thing sticks out as something fun without being overly spicy, but still somewhat "exotic."
OOOh! another desert that would be well received: Mango Kuhlfi for Indian.
Not as exotic would be a few dozen 'real' tamales at one of the tamalerias.
Can't think of anything else right now.
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