Cast Iron Mortar and Pestle

Cast iron is exceptionally durable and heavy, providing a stable, non-slip base that makes grinding tough spices and fibrous herbs much easier. Unlike ceramic, it won't chip or crack if dropped, and its naturally textured surface offers excellent grip for efficient pulverizing.

Yes, it is best to season your mortar and pestle before the first use to prevent rust and create a non-stick surface. Simply coat the interior with a thin layer of food-grade oil and heat it gently, or grind a small amount of rice to smooth out any initial casting imperfections.

Cast iron is prone to rust if left wet, so avoid soaking it in the sink or putting it in the dishwasher. After use, wipe it clean with a dry cloth or a stiff brush, and if you must use water, dry it immediately on a warm stovetop before applying a light coat of oil.

While it excels at dry spices and herbs, you can use it for wet ingredients if you are diligent about maintenance. Because moisture can cause cast iron to rust, ensure you wash, thoroughly dry, and re-oil the surface immediately after preparing pastes or sauces.

Cast iron is generally non-reactive once seasoned, meaning it won't impart a metallic taste to your ingredients. However, because the material is porous, it can retain the oils and aromas of strong spices like cumin or peppercorns, so it is best to give it a quick wipe-down between different types of ingredients.