--- a/data/json/items/comestibles/carnivore.json
+++ b/data/json/items/comestibles/carnivore.json
@@ -154,7 +154,8 @@
     "cooks_like": "mutant_meat_scrap_cooked",
     "proportional": { "price": 0.2, "calories": 0.5 },
     "vitamins": [ [ "mutant_toxin", 2 ] ],
-    "delete": { "flags": [ "SMOKABLE" ] }
+    "delete": { "flags": [ "SMOKABLE" ] },
+    "extend": { "flags": [ "BAD_TASTE" ] }
   },
   {
     "id": "mutant_human_flesh",
@@ -621,7 +622,8 @@
     "description": "Freshly butchered fat from a heavily mutated animal.  You could eat it raw, but it is better used as an ingredient in other foods or projects.",
     "looks_like": "fat",
     "proportional": { "price": 0.2 },
-    "vitamins": [ [ "mutant_toxin", 360 ] ]
+    "vitamins": [ [ "mutant_toxin", 360 ] ],
+    "extend": { "flags": [ "BAD_TASTE" ] }
   },
   {
     "id": "mutant_tallow",
@@ -631,7 +633,8 @@
     "description": "A smooth white block of cleaned and rendered fat sourced from a mutant animal.  It will remain edible for a very long time, and can be used as an ingredient in many foods and projects.",
     "looks_like": "tallow",
     "proportional": { "price": 0.2 },
-    "vitamins": [ [ "mutant_toxin", 180 ] ]
+    "vitamins": [ [ "mutant_toxin", 180 ] ],
+    "extend": { "flags": [ "BAD_TASTE" ] }
   },
   {
     "id": "mutant_lard",