Where can I find Sauce powder in Sursee?

Sauce powder can also be found in these cities:

Bremgarten Buchrain Ebikon Egolzwil Emmen Fahrwangen Hitzkirch Horw Huttwil Kriens Lucerne Malters Menziken Muri Oberkirch Oftringen Olten Rain Reiden Reinach Rothrist Ruswil Schöftland Sempach Seon Urswil Wohlen Wolhusen Zell Zofingen

You can also find this in Sursee:

Hamburger Buns Fruit Brandies Licorice Tri-Grain Toast Sugar Baked Goods Yeast Fresh Pumpernickel Breakfast Cereals Olives