Originally Posted by dbriggs10
My question is: Since my OG was higher than expected, will my FG also be higher than expected??? (expected FG - 1.010)
No. Corn sugar is virtually 100% fermentable. So if the "alcohol boost" is, in fact, corn sugar, the final gravity will be essentially the same as if you hadn't added it.
This is how some Belgian styles manage to be fairly dry in spite of their high alcohol content: a fairly significant amount of sugar is used in the wort, and since it is nearly 100% fermentable, the attentuation is higher than in an all-malt wort.