Where can I find Baking soda in Mauer?

Baking soda can also be found in these cities:

Bad Schönborn Bammental Dielheim Eberbach Edingen-Neckarhausen Eppelheim Heidelberg Hirschberg an der Bergstraße Ketsch Kronau Ladenburg Mannheim Neckarbischofsheim Neckargemünd Neulußheim Oftersheim Plankstadt Sankt Leon-Rot Schriesheim Schwarzach Sinsheim Waghäusel Wiesloch

You can also find this in Mauer:

Pumpernickel Whole Wheat Toast Spreads Savory Espresso Ground Dried Fruit Spread Sweet Filter Coffee Candy Jam Jam