--- ../objects.old/material_template_default.txt	2012-09-17 17:59:28.907898469 +0400
+++ material_template_default.txt	2012-09-17 17:59:28.695899382 +0400
@@ -2374,6 +2374,7 @@
 	[MAX_EDGE:500]
 	[ABSORPTION:100]
 	[LIQUID_MISC_CREATURE]
+	[REACTION_CLASS:CREATURE_EXTRACT]
 	[ROTS]
 
 This is for creatures that are "made of fire".  Right now there isn't a good format for that.