Cocktail bars require a solid setup of liquor, and you'll need a solid collection that includes variety, not just quality. A bourbon, gin, rum, scotch, tequila, vodka, and whiskey are the main ingredients you'll want to go for.
If you're looking for a general guide in quality, anything "Captain Morgan" or better on the shelf should be fine. Also, if you've never tried Grey Goose for your vodka or Southern Comfort for your whiskey, your Soho - Restaurant and Bar Cork is a great place to try that out.
SoHo - Restaurant and Bar Cork
77 Grand Parade, Cork, T12 NF70, Ireland
CALL : 021 4224040
WEBSITE : http://www.soho.ie