Question:
if i ate a mezonos, or a fruit that requires al haetz, and then ate and drank on and off for several hours, may i still make the brocha meen shalosh at the end?
Answer:
If you are no longer satisfied from the food that you ate a few hours ago, then you can not make a bracha achrona for that food. It is possible that you will still haveto make a bracha achrona for the food that you ate later.