Cobek and Ulekan (Indonesian Mortar and Pestle)

A wide, shallow stone mortar (cobek) paired with a stone pestle (ulekan), used specifically for grinding fresh sambal and spice pastes (bumbu) by a combined pounding-and-grinding motion.

Material & Construction

Carved volcanic stone, commonly andesite, prized for its rough, porous surface that grips and grinds ingredients effectively.

Traditional Uses

Grinding fresh sambal, bumbu spice pastes, and other Indonesian condiments requiring a specific coarse, fresh-pounded texture distinct from a blender's result.

Modern Availability / Equivalents

Widely available through Indonesian kitchenware suppliers internationally; a food processor can substitute for convenience though many cooks maintain the flavor and texture differ meaningfully.

Care & Maintenance

Wash and dry thoroughly; avoid soap buildup in the stone's porous surface, and periodically re-roughen the grinding surface as it smooths with extended use.

Sambal oelek and sambal terasi are both traditionally ground using this exact tool.