Where can I find Baking soda in Hintermoos?

Baking soda can also be found in these cities:

Aarau Buchs Egerkingen Egolzwil Erlinsbach Fahrwangen Gränichen Hitzkirch Huttwil Langenthal Lenzburg Lostorf Lupfig Mellingen Menziken Murgenthal Möriken-Wildegg Oberkirch Oftringen Olten Rain Reiden Reinach Rothrist Schöftland Schönenwerd Sempach Seon Suhr Sursee Unterentfelden Zell Zofingen

You can also find this in Hintermoos:

Rice Pudding Baking Powder Spelt Bread Nut Nougat Cream Balsamic Vinegar Pork Spice Blends Potato Products Rye Roll Canned Tomatoes