Assertion: coffee grinder's burr | /r/HasProperty | ceramic
Facets:
Source sentences:
text: Ceramic burrs are found in both large and small coffee grinders, and it must be said that the reputation of such coffee grinders that do happen to have ceramic burrs is usually overwhelmingly positive.
text: Like the other top manual coffee grinders, the burr is ceramic, which we know is the most durable and long-wearing material.