Where can I find Baking powder in Roggwil?

Baking powder 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:

Vegetable Juices Instant Iced Coffee Cheese Roll Canned Fish Fat Sauce Powder Spirits Stews Bakery Products Red Wine