Grabba leaf is a type of dark, thick, cured tobacco leaf with a strong flavor and aroma. It's often used in smoking blends, and is popular in the Caribbean and Africa. 
Description 
Color: Grabba leaves are dark in color
Texture: Grabba leaves are thick
Flavor: Grabba leaves have a rich flavor
Aroma: Grabba leaves have a strong aroma
Smoke: Grabba leaves produce a harsh smoke
Uses
Smoking: Grabba leaves can be smoked on their own or blended with other tobaccos or herbs 
Wrappers: Grabba leaves can be used as wrappers for cigars 
Binders: Grabba leaves can be used as binders in smoking blends 
Fillers: Grabba leaves can be used as fillers in smoking blends 
Varieties 
Hot Grabba Leaf: A dark, thick leaf with a strong, smoky aroma
Red Rose Grabba: A dark, thick leaf with a potent smell that's suitable for rolling or blending
Red Herring Grabba: A dark, thick leaf with a smoky scent similar to barbecue or smoked fish
Origin
Grabba leaves originated in regions like Jamaica in the Caribbean