Best do that with something that hides the taste well. Maybe create a drink so aggressive that it might as well be a cleaning product. Just add some caramel to paint the whole thing black and you’re good to go. People will love you coca product.

If an actor studies all data available on your grandma, manages to mimic her voice and looks, and then starts a conversation with you, acting as your grandma; are you then talking to a ghost? Cause that is what an AI does: learn to predict the behaviour of your grandma, and then act out those predictions.