What's the name of this ancient kitchen implement used to grind ingredients into a paste or powder?

This humble set of cooking tools has been an essential for human civilizations dating back to antiquity. Archaeologists have discovered evidence of mortar and pestle use in Southwest Asia as far back as 35,000 BC. These early versions consisted of an indentation in a rock and a handheld stone tool—really not that different from today's gourmet shop models!

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