Some weird things I brought to school were:
- sandwiches made with cold cuts which were not bologna
- sandwiches made with rye bread or French boule, not Wonderbread
- sandwiches made with cheese which were not Kraft slices
- sandwiches made with Wonderbread and peanut butter, but with home-made peach jam, not store-bought grape jelly
- Swiss ladybug chocolates
- Hopjes coffee candies
- cookies that came from a deli, not the cookie aisle at the local A&P
"That's crap," I said. "We eat sauerkraut all winter at home."
That turned out not to be a very good defence.
Live and learn is the way the saying goes, and the thing I learned from the critiques of my lunches (besides that intolerance is truly irrational) is that while writing what you know is important, you have to give the reader a chance to understand.
Say your character has trouble with kudzu growing on their property and choking out the other plants, and say you want to make that a plot point. You can't just have the characters complaining about the kudzu, or making jokes about it, or mention it's killed the rose bushes. "Kudzu" is a totally opaque term if you've never encountered it before.
What to do? Well, mentioning it's a type of plant is a good start. I'm deliberately using kudzu as an example because the first time I encountered the word, someone had written a jokey piece about it with "the war on kudzu" being literally treated as a military action. At the end of the piece I could see it was supposed to be amusing, but I wasn't sure if kudzu was a dangerous animal or a quasi-military Japanese-American survivalist group. Maybe an isolationist cult that had militarised? I wasn't sure.
I definitely couldn't tell from the piece that it was supposed to be a plant.
Yes, there's search engines and dictionaries and encyclopedias which a reader can reference, but it's not likely they're going to bother the moment they get confused by your text. They'll either keep going, hoping for some context to let them puzzle it out, or else they'll give up and read something in which they can understand the references. Readers don't necessarily want the entire background on something they don't understand. They just want to be able to say, "Ah, okay, it's a type of plant" so they can get on to the next part of the story.
If you're not even giving them that, even something as humble and commonplace as sauerkraut will remain exotic and opaque.