Where can I find Baking soda in Langenthal?

Baking soda can also be found in these cities:

Aarau Balsthal Biberist Burgdorf Derendingen Egerkingen Egolzwil Gerlafingen Herzogenbuchsee Huttwil Kirchberg Lostorf Murgenthal Oensingen Oftringen Olten Reiden Rothrist Schöftland Schönenwerd Solothurn Unterentfelden Utzenstorf Zell Zofingen Zuchwil

You can also find this in Langenthal:

Semolina Porridge Cake Vanilla Sugar Jelly Ice Cream Desserts Meat Products Lemonades Instant Coffee Pumpkin Seed Roll Canned Meat