How much corn sugar can I add?

[OHIOSTEVE]

Ok How much corn sugar can I add to this without negatively effecting the taste?

17 pounds 2 row
1 pound crystal 20
1 pound crystal 80
Already have 1.5 pounds corn sugar in it. Missed my OG by quite a lot.
Only hit 1.090.. expected OG 1.107 ( 5.5 gallon batch) My efficiency dropped way way off for some reason. next time I am going to plan a 90 or even 120 minute boil.. as it was I could only single batch sparge and when I do that my efficience is way low compared to a split batch sparge.

OH BTW the sugar ( if you think I should) will be added during fermentation .

 

[bullinachinashop]

I try not to exceed 5%, but have gone up to 10% without any noticeable cidering.

Why not use DME to get your gravity up?

Bull

 

[jsullivan02130]

High gravity mashes will reduce your efficiency considerably.