Redbreast is an Irish whiskey brand that was first distilled in the 1970s. While the brand has ties to Gilbey’s, it is currently produced by Irish Distillers (aka Jameson). And in fact, the Redbreast 12 casks-strength is a blend of redbreast cask strength review whiskies from Midleton, Co. Cork, and a column still grain whiskey from the Cooley Distillery in County Louth. Cask strength means that it’s bottled straight from the cask, no additional water is added due to the high alcohol content. Usually, Irish whiskey is diluted before bottling and only a few bottlings are released in Cask Strength.