Added Mandrake Decoction

ingredient/ingredient.go

@@ -54,6 +54,8 @@ var (
 	LeachedCoal     Ingredient = Ingredient{"Leached Coal", BottomShelf}
 	Saltpetre       Ingredient = Ingredient{"Saltpetre", BottomShelf}
 	Sulphur         Ingredient = Ingredient{"Sulphur", BottomShelf}
+	MandrakeRoot    Ingredient = Ingredient{"Mandrake Root", BottomShelf}
+	FreshwaterPearl Ingredient = Ingredient{"Freshwater Pearl", BottomShelf}
 )
 
 func IngredientFromString(s string) (Ingredient, error) {
@@ -120,6 +122,10 @@ func IngredientFromString(s string) (Ingredient, error) {
 		return Saltpetre, nil
 	case "Sulphur":
 		return Sulphur, nil
+	case "MandrakeRoot":
+		return MandrakeRoot, nil
+	case "FreshwaterPearl":
+		return FreshwaterPearl, nil
 	default:
 		return Water, fmt.Errorf("Invalid Ingredient: %s", s)
 	}