and Poland in particular, is crap for it.
He's not kidding. You won't find even a semblance of authentic mexican cuisine at any restaurant, and ordering something "burrito-sytle" simply means it's served with red beans. It's not too hard to find pickled jalapenos, and there's some cruddy cheddar knock-offs that will do in a pinch, but if you wanna make anything more sophisticated than nachos, you're up the creek. I know this sounds tangentially superfluous to what your post is actually about, but anything that makes you miss home is gonna make everything else that much harder.