I think that every expat could probably name that one thing from their home country that they just can't live without, the one thing that makes life in a foreign country bearable.   Actually, it is probally not one thing, but a list of things.  For our family the item at the top of that list is Tillamook Cheese.  
The locally available alternatives are no comparison.  We have a block of greenish "Pizza Cheese" that passes as the worst mozzarella on earth.  And the local dairy/grocery company Nilgiri's has a cheddar cheese that is best described as "interesting", but not "good tasting".    But for me, nothing compares to Tillamook. 

How much do I love it?  I planned my first honeymoon trip around a visit to the factory.   I ask everyone who is coming to Chennai from the states  to bring me as much as they can pack.   I have to go to Phoenix next month and am planning to bring back a suitcase of it. 

I am running an international cheddar cheese trafficking ring.  Anything for my family.   For Max and Abby they will eat just about anything as long as it is covered in this stuff, and I am more than ready to give the Indian food a break and feast on real grilled cheese sandwiches.