Where can I find Baking soda in Alchenflüh?

Baking soda can also be found in these cities:

Bern Biberist Bremgarten bei Bern Burgdorf Derendingen Gerlafingen Grenchen Gümligen Hasle bei Burgdorf Herzogenbuchsee Hinterkappelen Ittigen Kirchberg Köniz Langendorf Langenthal Langnau im Emmental Murgenthal Münchenbuchsee Ostermundigen Solothurn Utzenstorf Worb Zollikofen Zuchwil

You can also find this in Alchenflüh:

Edible Curd Grated Lemon Peel Flaxseed Bread Fruit Bar Pickled Vegetables Fresh Salt Schupfnudeln Whole Grain Rolls Mayonnaise