This is a cocktail, not a recipe for a meal, so it falls outside Grocery List Plus's typical scope—but it's worth knowing the real cost and availability. Yellow chartreuse runs $40–$55 a bottle at Harris Teeter or Kroger liquor departments and you'll use maybe half an ounce per drink, so the per-serving spirit cost alone is roughly $1.50–$2.00 before whiskey and lemon basil. Lemon basil is the real blocker: standard grocery chains do not stock it year-round, and a weeknight trip to a specialty grocer or farmer's market for a single herb is a genuine friction point. The 10-minute claim is honest for mixing, but sourcing lemon basil beforehand means this is not a spontaneous weeknight drink. Better suited to someone who grows lemon basil or has a reliable source already in their rotation.