I started a 2 gallon batch of 'beer' from left overs. After the initial vigorous fermentation, I thought, what the heck, I'll add some left over sugar syrup (conveniently on hand), and see what happens. Fermentation picked back up. I thieved out a few ounces tonight to see what was going on. It is a good stout ale.
I might think about stopping the ferment, as it tasted potent, and strong. But the main question is how might I determine the ABV, since I messed with the sugar during fermentation? All my calculations rely on OG - FG...and I messed with that math by adding fermentables...
My wife says I have ADD, but, hey look- a chicken!