I love to brew Belgian beers and have brewed JZ's tripel recipe 3 times now. The first time I had a thermometer issue and the beer didn't dry out enough (finished 1020..!).
The second time I made it with a new and improved thermometer and mashed at 149 and added the sugars with 20 minutes left in the boil. The beer still didn't dry out enough (1021... WTF?)
Sooooo, the third time I made it I mashed at 149 and added only 1/2# of sugar to the boil. The yeast ripped right through the wort/sugar and after about 5 days I boiled up another pound of sugar and added to the fermenter which the yeast gobbled right up. Two days later I repeated with the final pound of sugar and FINALLY the beer finished right on at 1011! Tasted great and smelled phenomenal. I will NEVER add more than 1# of sugar to the boil ever again. The yeast DO lose their ability to ferment maltose and will not dry the beer out enough. There is also very little risk of contamination when doing this due to decreased pH, alcohol content, and viable yeast getting right to work on added sugars.

