diff --git a/src/Roux/CookLog.hs b/src/Roux/CookLog.hs
index 0aea938..b11d87c 100644
--- a/src/Roux/CookLog.hs
+++ b/src/Roux/CookLog.hs
@@ -106,13 +106,22 @@ insertEntry conn filename day mComment = do
     fromMaybe _ (Just x) = x
 
 -- | Fetch all entries for a given recipe, newest first.
+-- Tries both the normalized key and with @.cook@ appended (for legacy entries).
 fetchEntries :: Connection -> Text -> IO [CookEntry]
-fetchEntries conn filename =
-    SQL.query
+fetchEntries conn filename = do
+    entries <- SQL.query
         conn
         "SELECT id, recipe_filename, cooked_date, comment, created_at \
         \ FROM cook_log WHERE recipe_filename = ? ORDER BY cooked_date DESC, id DESC"
         (Only filename)
+    if null entries
+        then
+            SQL.query
+                conn
+                "SELECT id, recipe_filename, cooked_date, comment, created_at \
+                \ FROM cook_log WHERE recipe_filename = ? ORDER BY cooked_date DESC, id DESC"
+                (Only (filename <> ".cook"))
+        else pure entries
 
 -- | Fetch all entries across all recipes, newest first.
 fetchAllEntries :: Connection -> IO [CookEntry]
diff --git a/src/Roux/Server.hs b/src/Roux/Server.hs
index bf7e12b..8e1e654 100644
--- a/src/Roux/Server.hs
+++ b/src/Roux/Server.hs
@@ -643,7 +643,7 @@ handleRequest state db request respond = do
                 Nothing -> respond notFound
         -- Cook log JSON endpoint for a specific recipe
         ["cook-log", filename] -> do
-            entries <- CookLog.fetchEntries db filename
+            entries <- CookLog.fetchEntries db (normalizeRecipeKey filename)
             let body = A.encode entries
             respond $
                 Wai.responseLBS
@@ -666,8 +666,14 @@ handleRequest state db request respond = do
         _ -> respond notFound
 
 -- | Handle POST /cook-log/{filename}
+-- | Normalize a recipe filename to match the recipe index key:
+-- lowercased, with @.cook@ extension stripped.
+normalizeRecipeKey :: Text -> Text
+normalizeRecipeKey = T.pack . map toLower . stripCookExt . T.unpack
+
 handleCookLogPost :: SQL.Connection -> Text -> Wai.Application
-handleCookLogPost db filename request respond = do
+handleCookLogPost db rawFilename request respond = do
+    let filename = normalizeRecipeKey rawFilename
     body <- readRequestBody request
     let params = parseFormBody body
         dateStr = fromMaybe "" (lookup "cooked-date" params)