Where can I find Cornstarch in Werthenstein?

Cornstarch can also be found in these cities:

Buchrain Ebikon Egolzwil Emmen Hitzkirch Horw Huttwil Kriens Lucerne Malters Oberkirch Rain Ruswil Sarnen Sempach Stans Sursee Urswil Wolhusen Zell

You can also find this in Werthenstein:

Butter Bread Spread Sweet Food For A Low Cholesterol Diet Pasta Dishes Fruit Juices Instant Cappucino Breakfast Croissants Canned Food