Fill a Collins glass with ice and set aside.
Combine Baileys Irish Cream, Godiva Chocolate Liqueur, Kahlua, and butterscotch schnapps in a cocktail shaker with ice.
Add whole milk and shake vigorously for 8–10 seconds.
Strain into the prepared Collins glass over ice and serve immediately.
For a thicker, more milkshake-like texture, substitute whole milk with heavy cream or half-and-half - the extra fat binds the liqueurs beautifully and elevates the mouthfeel considerably.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including Blind Russian.