Where can I find Baking soda in Roggwil?

Baking soda can also be found in these cities:

Aarau Balsthal Buchs Burgdorf Derendingen Egerkingen Egolzwil Erlinsbach Gerlafingen Gränichen Herzogenbuchsee Huttwil Kirchberg Langenthal Lostorf Murgenthal Oensingen Oftringen Olten Reiden Rothrist Schöftland Schönenwerd Suhr Unterentfelden Wolhusen Zell Zofingen

You can also find this in Roggwil:

Seafood Mixed Rolls Rusk Food For Allergy Sufferers Potato Dishes Fitness Drinks Espresso Ground Pastries Nuts