There is no curry sauce in New York. Actually, the New York metro area seems to have the least sauce choices. For McNuggets we only have Sweet 'N Sour and Barbeque. I am pretty sure that other US areas have a hot mustard sauce in addition to the other two. On top of that, they don't put mustard on the cheeseburgers. I grew up in New Jersey with mustard on my McDonalds burgers. Did they conduct some focus group that indicated New Yorkers hate mustard?