This is a cocktail, not a recipe for Grocery List Plus, which reviews dishes for meal planning and household cooking. If you meant to submit a food recipe, please resubmit with ingredients and instructions for a prepared dish. If this is indeed a cocktail you'd like reviewed for entertaining, the real constraint is red currant syrup and fresh red currants, which require a specialty or upscale grocer—Publix or Harris Teeter carry them seasonally, but a standard weeknight won't have them on hand. The whiskey, sherry, champagne, and lemon juice are standard, and cane syrup is available at most chains, but budget a special stop or substitute regular simple syrup to make this work without extra planning.