Even i simply love Mc chicken sauce. In fact i tried to study every brand mayo in market to get that one taste, but i never got the same taste in any other mayo other than Kraft mayo. They taste exactly the same they serve at McDonald.
My sister lvoes the McChicken and eat it rather often. I have never tried it, I haven't had McDonalds in ages, but I do love their McCafes, or ice coffee. I think it may be a special mix with mayo in it (according to my sister).