" What kind of food would be good to buy the grocery store that are nonperishable that could be kept in my hotel room?
I was thinking maybe a couple jars of olives, granola bars, and other food like that. "
Thats up to you. what do you buy at home that are non perishables? They have just about the same stuff there too.
" I'm also interested in authentic Dutch cuisine , if that existed Amsterdam. Any suggestions on that?"
One of the hotels directed me to an "authentic Dutch cuisine" place near the Leidseplein. I forget the name but im sure the locals would know. From what the hotel told me, its about the only place in town that is close to where i was staying.
just a comment. if you have space in your luggage you may want to consider bringing food from home. it will probably save you some $$$. look at beef jerky and things like that.
i know for breakfast they like the nutella with the chocolate sprinkles on their toast/bread.