Kosher food is actually fairly difficult to get outside of certain areas. Even stuff taken for granted is hard to get.
We are always debating about ice cream here, In NY all Ice Creams are kosher, however go outside the NY-NE area and the only kosher brands are Breyers and Dreyers (Eddys)
Bread is also mostly kosher in NY, not elsewhere in the US
And forget about Europe, Europe its almost impossible to figure out.