“See this berry?” I ask a group of eager young children crouched down on clean straw, in the middle of rows of strawberry plants laden with red fruit. “The strawberry is like a bottle of pop; all the sweetness is locked up inside. Pick it gently, and keep the green lid on top, or the fizz will start bubbling out, just like a pop bottle. When you are ready to taste it, twist off the green top, and pop it into your mouth – a juicy, sweet strawberry!”