Other items to try include tostones (fried plantains ... (a coconut custard), pastelitos de guayaba (a guava-filled pastry) or mantecaditos (a Puerto Rican shortbread cookie).
The Museo del Café de Puerto Rico (Puerto Rico Coffee Museum ... fresh yam puree, and breadfruit tostones. At the end of an incredible meal, maybe Diaz will be kind enough to give you some ...