Straight Rye makes the best Manhatten's. I go with Rittenhouse BIB as the numero uno. 2 oz of whiskey to 1 oz sweet vermouth. a couple of dashes of bitters and a marschino cherry. 2 tips for you one is to chill the martini glass with ice before you prepare the drink in the shaker. The other is to shake it for no less than 5 seconds. Strain it into your chilled glass and you are good to go. If you want to make a perfect Manhattan use 1/2 a oz of sweet vermouth and 1/2 a oz of dry vermouth. A dry manhattan is 1 oz of dry vermouth. Enjoy.