I love chocolate! So when we found we had an extra day of acclimating before trekking through Peru, I booked the Bean to Bar workshop for my wife and I. Our "Willy Wonka" instructor was fabulous. She was funny, informative, and interacted with our entire group. We completed almost the entire process of making chocolate from picking our our beans, roasting them, peeling, making them into paste, and even more along the way. We had competitions and laughed throughout the tour. In the end, we were provided with our choice of dark or milk chocolate to mold and take home with us.
If you have a couple of extra hours in Cusco and you love chocolate, I highly recommend this tour.