Located on Tirimbina's private reserve, take a walk with a guide over an extra-long suspension bridge fastened over the Sarapiqui River and sway through damp forest trails to arrive at the plot of land where you'll get a speed-course of how cacao becomes chocolate. Watch as the guide and a trained demonstrater roast, hull and grind the dried cacao beans; each step of the process brings it closer to becoming coveted silky chocolate. An overview of the history of the cacao's role in Mayan and Aztec cultures is also discussed - like how it was used as currency for trading and as a sacred drink for priests and other nobles. Try samples of this liquid gold and add your own dash of supplied spices like black pepper or hazelnut powder to give your tastebuds an extra surge of flavor. At the end of this 2 hour chocolate class, you'll get your own pouch of cacao beans and an assortment of Costa Rican postcards for you to "buy" with the cacao currency in your pouch. Frog tours, a bat program and bird tours, among other educational experiences, are also delivered by Tirimbina.