[Avodah] What's the berakha on hearts of palm?

[Zev Sero]

I looked into the sugar issue in depth about 25 years ago, so I've
forgotten most of it.  As I recall, a lot of the rishonim didn't have
a clear grasp of the metzius, such as whether cane really is grown
for refined sugar or for sucking the juice from the raw cane.
The "ha'etz" possibility may come from someone unclear on how the
canes grow.  There's a similar confusion with cinnamon, where some
rishonim (perhaps starting with tosfos) believed it to be a cane that
grows from the ground, or perhaps confused it with an actual cane that
was passed off in their day as cinnamon.

-- 
Zev Sero                      The trouble with socialism is that you
zev at sero.name                 eventually run out of other people’s money
                                                     - Margaret Thatcher