I didn't want to confuse the issue by hijacking the thread about making lighter syrup...

I have, what I think is, a weird problem.... I want to make syrup darker and don't know how...

Been hobby sugaring for a few years now, and have always been a little disappointed in the colour of my syrup.... Always on the dark side.... Wasn't too worried about it, knowing I'd not be winning any ribbons at the fair... and people don't complain about the colour of free syrup....

This year, I am actually trying to fill some orders, and to my surprise, people want the dark stuff....

Here's my problem... I've been collecting and boiling to the bitter end this season, and have not been able to get any darker than Amber....
Have not cleaned my pans since I started... Running 10% concentrate. on a 2x6 drop flue, at 20-25 GPH to 67%
Have one boil left and would really like it to be dark.
I think I read somewhere, that a slower boil will produce darker syrup. Is this true?... Or, any other suggestions.???

Thanks
Wayne