Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Invaluable and easy to use!

When I got my first apartment, I bought The Joy Of Cooking, thinking I could make as much of a mess in the kitchen as I wanted without worrying about a roommate seeing it. All I wanted to do at first was make a good beef stew (my own trials were OK, but nothing I'd share with anyone). Well, in The Joy Of Cooking, the task was comparable to building a nuclear power plant from scratch. Fortunately, I got this book for Christmas that year (2 months later) and have since made all sorts of dishes I wouldn't dare to try with the recipes from that "other" book. Beef strognoff - fewer than 10 ingredients. Mac and cheese - 6 ingredients. Cheesecake - 4 ingredients. And they all taste great! I'd give this book 10 stars if it were possible.