I still don't buy the undiscovered a common's tree sapling that turn into sugary things -_-
That's actually not that strange...
This world has the usual sugar-as-luxury-product and presumably honey, so they already
have "sugary stuff".
Every tree or bush bark contains and transports "sugary things", except that it
also contains a lot of other stuff that tastes bad (resins, tannins), gives you a bad case of the Runs ( Xylitol from birch is a nice example..) , or toxins ( some of which
can be beneficial to us, but that's mostly because we're not the target for the toxin...)
And in most trees the concentration of sugars in the sap is
really low, so it isn't even worth bothering with.
Even the sugar maple showcased here only does its trick in the right environmental circumstances: A short,warm growing season with harsh long winters. They use the "high concentration" sugar to grow
fast, and as anti-freeze.
Take it out of that environment into warmer latitudes, and you'll find it rapidly stops producing quite that much sugar ( and more Nasties..) , or dies pretty quickly because it
will be infested by anything and everything inviting themselves to the Sugar Party..
Even then... the whole maple syrup thing didn't even come up
until peeps started harvesting the sap using the same technique as is used for rubber harvesting... It's a colonial/early industrial Age thing instead of the "Stone Age Knowledge" most people assume.
Sugar maples were cultivated before that, but that was for their actual wood. They make
really nice, smooth floors and table tops. And ...bowling alleys... High quality "soft" wood.
So no... it's not "logical" that peeps there could have figured out that the tree could have another purpose. It's only logical if you recognise the tree and already know it can
also be used to make Sugary Things. If you have them on an industrial scale...
What I don't buy is that our MC gets a huge kettle of the tree sap in the timeframe that is shown...
That is the actual Manga Cooking done here..
Nor would it be the Money Maker it's pretended to be here..
Maple syrup wasn't a Thing outside Canada until peeps made it into a "cultural artisanal product" to be snooty about.
You're still in a world with medieval transport limitations. Which is mostly
why sugar is so expensive there..
The maple syrup might reduce the need to
import sugar ( which is why the Canadians went for it to begin with originally...) and as such make life cheaper because you can produce it locally.
Exporting it as a "money-maker" would run into the same transport problems as importing sugar... Getting stuff from A to B is difficult and
expensive.