Answer:
A standard dimension for sandwiches and rulers
I'm often served as a "rack of ..." I'm often smoked or grilled, with bones in, and slathered in BBQ sauce.
I'm a long curved fruit that grows in clusters and has soft pulpy flesh and yellow skin when ripe.
Glittering points that downward thrust. Sparkling spears that do not rust. What is it?
I travel the world and I am drunk constantly. Who am I?
What is always coming but never arrives?