diff --git a/RecipeGenerator.cs b/RecipeGenerator.cs
--- a/RecipeGenerator.cs
+++ b/RecipeGenerator.cs
@@ -583,16 +583,17 @@ namespace DesertPaintLab
                         {
                             recipes[colorName].CopyFrom(recipe);
                             recipeCosts[colorName] = recipe.Cost;
+                            log?.WriteLine("New recipe (cost {0}): {1}", recipe.Cost, recipe);
                             if (NewRecipe != null)
                             {
                                 NewRecipeEventArgs args = new NewRecipeEventArgs(colorName, recipe);
                                 NewRecipe(this, args);
                             }
                         }
-                        else
-                        {
-                            Console.WriteLine("Ignoring recipe - existing cost is cheaper.");
-                        }
+                        //else
+                        //{
+                        //    Console.WriteLine("Ignoring recipe - existing cost is cheaper.");
+                        //}
                     }
                     else
                     {
@@ -609,14 +610,14 @@ namespace DesertPaintLab
             }
             else
             {
-                string msg = String.Format("Recipe is invalid ({0} ingredients)\n", recipe.Ingredients.Count);
-                foreach (PaintRecipe.RecipeIngredient ingr in recipe.Ingredients)
-                {
-                    msg += String.Format("    -> {0} {1}", ingr.quantity, ingr.name);
-                }
-                lock (workerLock) {
-                    Console.WriteLine(msg);
-                }
+                //string msg = String.Format("Recipe is invalid ({0} ingredients)\n", recipe.Ingredients.Count);
+                //foreach (PaintRecipe.RecipeIngredient ingr in recipe.Ingredients)
+                //{
+                //    msg += String.Format("    -> {0} {1}", ingr.quantity, ingr.name);
+                //}
+                //lock (workerLock) {
+                //    Console.WriteLine(msg);
+                //}
             }
         }
 
@@ -717,7 +718,7 @@ namespace DesertPaintLab
                     node.InitForQuantity(newQuantity);
                     if (node.CurrentTargetQuantity <= node.UsedQuantity)
                     {
-                        if (log != null) { lock(log) { log.WriteLine("Update quantity to {0}", node.CurrentTargetQuantity); } }
+                        //if (log != null) { lock(log) { log.WriteLine("Update quantity to {0}", node.CurrentTargetQuantity); } }
                         return true;
                     }
                 }
@@ -766,7 +767,7 @@ namespace DesertPaintLab
                                     {
                                         // just popped the last reagent at the top level
                                         ++currentDepth;
-                                        if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1}", currentDepth, node.MaxReagents); } }
+                                        //if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1}", currentDepth, node.MaxReagents); } }
                                     }
                                 }
                             }
@@ -778,7 +779,7 @@ namespace DesertPaintLab
                                 {
                                     // just popped the last reagent at the top level
                                     ++currentDepth;
-                                    if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1} [pop last reagent at top level]", currentDepth, node.MaxReagents); } }
+                                    //if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1} [pop last reagent at top level]", currentDepth, node.MaxReagents); } }
                                 }
                             }
                         }
@@ -790,7 +791,7 @@ namespace DesertPaintLab
                             {
                                 if (! node.AddNextReagent())
                                 {
-                                    if (log != null) { lock(log) { log.WriteLine("Failed to reagent {0}/{1}", node.ReagentCount+1, currentDepth); } }
+                                    //if (log != null) { lock(log) { log.WriteLine("Failed to add reagent {0}/{1}", node.ReagentCount+1, currentDepth); } }
                                     recipeFound = false;
                                 }
                             }
@@ -805,7 +806,7 @@ namespace DesertPaintLab
                 else
                 {
                     ++currentDepth;
-                    if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1} [no recipe]", currentDepth, node.MaxReagents); } }
+                    //if (log != null) { lock(log) { log.WriteLine("Increased depth to {0}/{1} [no recipe]", currentDepth, node.MaxReagents); } }
                 }
             } while (currentDepth <= maxReagents);
             if (recipeFound)
@@ -822,12 +823,12 @@ namespace DesertPaintLab
                     node.TestRecipe.AddReagent(node.Reagent(i).Name, node.CurrentWeights[i]);
                 }
                 if (log != null) { 
-                    string combo = "";
-                    foreach (PaintRecipe.RecipeIngredient ingr in node.TestRecipe.Ingredients)
-                    {
-                        combo += " " + ingr.name;
-                    }
-                    lock(log) { log.WriteLine("New ingredients: " + combo); }
+                    //string combo = "";
+                    //foreach (PaintRecipe.RecipeIngredient ingr in node.TestRecipe.Ingredients)
+                    //{
+                    //    combo += " " + ingr.name;
+                    //}
+                    //lock(log) { log.WriteLine("New ingredients: " + combo); }
                 }
             }
 
@@ -857,7 +858,7 @@ namespace DesertPaintLab
             if (remainingWeight < MinConcentration)
             {
                 // not possible to make a valid recipe
-                Console.WriteLine("Insufficient remaining weight");
+                //Console.WriteLine("Insufficient remaining weight");
                 return false;
             }
             //uint remainingReagents = (uint)node.Reagents.Count - node.CatalystCount;
diff --git a/UI/RecipeGeneratorView.cs b/UI/RecipeGeneratorView.cs
--- a/UI/RecipeGeneratorView.cs
+++ b/UI/RecipeGeneratorView.cs
@@ -241,6 +241,16 @@ namespace DesertPaintLab
                 generator.Progress += OnProgress;
                 generator.Finished += OnFinished;
                 generator.NewRecipe += OnNewRecipe;
+
+                bool enableDebugMenu = false;
+                DesertPaintLab.AppSettings.Get("EnableDebugMenu", out enableDebugMenu);
+                bool logGenerator = false;
+                DesertPaintLab.AppSettings.Get("GeneratorLog", out logGenerator);
+                if (enableDebugMenu && logGenerator)
+                {
+                    string logDir = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
+                    generator.Log = System.IO.Path.Combine(logDir, "dpl_generator.txt");
+                }
             }
             generator.InitRecipes(profile.Recipes);