Answer:
What breaks in the water but never on land?
Temporary evidence of where you've been strolling
I'm often served as a "rack of ..." I'm often smoked or grilled, with bones in, and slathered in BBQ sauce.
Big as a saucepan, deep as a cup, Even a river can't fill it up. What is it
Which is the oldest tree?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.