Answer:
I'm often served as a "rack of ..." I'm often smoked or grilled, with bones in, and slathered in BBQ sauce.
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
I'm the source of all emotion, but I'm caged in a white prison.
What is born on the ground but floats to the sky, to be returned back again from the clouds up high?
I can be found in seconds, minutes and centuries, but not in days, years or decades.
What is big and yellow and comes in the morning, to brighten mom's day?