The Old Fashioned is my favorite drink. It introduced me to whiskey and mixology plus it's simple and versatile. I think it's easy to judge if a bar has good cocktails based solely on their Old Fashioned. What are your opinions, favorite variations, etc?
Usually a 1:1 replacement, same as the other guy. I suppose you could always go a little less and try, then slowly add until you find the sweet (ha) spot