+Agar is a gelatinous substance, derived primarily from red [Algae](/wiki/algae). This natural polysaccharide forms a firm, clear gel, widely valued in both [Microbiology](/wiki/microbiology) as a culture medium and in culinary arts as a plant-based thickener.
+## See also
+- [Culture Medium](/wiki/culture_medium)
+- [Gelling Agent](/wiki/gelling_agent)
+- [Food Additive](/wiki/food_additive)
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