My wife and I created a little martini tasting last night. Here was the line-up:
1. 2:1 of North Shore #6 to Dolin Dry
2: 2:1 of Small's Gin to Dolin Dry
3. 2:1 of Small's Gin to Dolin Dry plus about 3-4 drops of Regan's Orange bitters*
4. 2:1 of Small's Gin to Dolin Dry plus about 8 drops of Regan's Orange bitters*
*Normally I'd make a martini with 3oz of alcohol (say 2oz of gin and 1oz of vermouth), so the bitters would be 3-4 drops for a 3oz drink. For the tasting, we cut everything in half so that four drinks came to a total of 6oz of alcohol and correspondingly less bitters. My measurement of bitters is quite imprecise because I wasn't careful to have nice, uniform drops of the stuff.
The first three drinks were all great. The fourth had too much bitters (and I love bitter drinks). The comparison of #1 to #2 revealed the differences in the gins. Both were very good. The North Shore had more aromatics going on and I especially liked it; the Small's had a more refined, austere taste. My wife didn't know what was in each drink when we did the tasting and she guessed that that #2 was a dirty martini because it had a nice brininess to it.
The comparison of #2 to #3 showed that adding bitters to the drink adds a layer of complexity and really changes the drink.
The comparison of #3 to #4 was meant to highlight the difference between a little bitters and a lot of bitters. #4 ended up having too much bitters and wasn't pleasant to drink.
The occasion? My dog and I took a walk to In Fine Spirits to get a 6-pack of Left Hand Milk Stout. They only had one bottle left. Not wanting to leave empty-handed, and remembering this thread, I picked up a bottle of North Shore. I also picked up a bottle of Bittercube Bolivar bitters. The guys in the store were doing a tasting of Buffalo Trace whiskey's to select the barrel that would be the next In Fine Spirits-barrel select.
As an aside, another great gin that is quite inexpensive is
Broker's. We usually have a 1.75L of this in the house and it would have been fun to include it in the tasting.