Complex sentence: In the U.S., starting in February 2011, "Triple Thick Shakes" were discontinued and new McCafe Shakes were introduced, which are the same shakes as before except with whipped cream and a cherry on top.
Split into simpler sentences: In the U.S., starting in February 2011, "Triple Thick Shakes" were "discontinued" and new "McCafe Shakes" were introduced. Which is the same shakes as before except with whipped cream and a cherry on top.