Where can I find Tri-grain toast in Urswil?

Tri-grain toast can also be found in these cities:

Adliswil Affoltern am Albis Baar Buchrain Buochs Cham Ebikon Emmen Fahrwangen Goldau Hitzkirch Horw Kriens Küssnacht Lucerne Malters Menziken Muri Oberkirch Rain Reinach Rotkreuz ZG Ruswil Rüschlikon Schöftland Sempach Steinhausen Sursee Wolhusen Zug

You can also find this in Urswil:

Mayonnaise Rice Pastries Gin Cookies Buttered Toast Sausages Edible Curd Grated Lemon Peel Flaxseed Bread