The bitter, chocolate-tasting product of cacao beans, met in the kitchen as unsweetened cocoa powder. Bakers use it in chocolate cakes and tiramisu; with hot milk and sugar it becomes cocoa.
可可 as a food: 可可粉 (cocoa powder), 可可豆 (cocoa bean), 热可可 (hot cocoa). As a name, it's a cute nickname for people or pets, and also a transliteration of Coco.