Fill a highball glass with ice.
Add the blended Scotch and lime juice.
Top with cold ginger beer.
Stir once, gently, to combine without losing carbonation.
Garnish with a lime wedge.
Named for the American actress Mamie Taylor, who reportedly asked for something long and cold on a boating trip in upstate New York in 1899. It became a national craze — and then a template that the Moscow Mule and the Dark 'n' Stormy both quietly borrowed.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including Mamie Taylor.