Where can I find Baking soda in Altendiez?

Baking soda can also be found in these cities:

Aarbergen Bad Ems Beselich Diez Hadamar Hundsdorf Idstein Lautert Limburg an der Lahn Montabaur Mudershausen Nassau Wallmerod (Westerwald) Winden (Rhein-Lahn-Kreis) Wirges

You can also find this in Altendiez:

Pudding Decorative Sugar Three-Grain Bread Cereals Delicatessen Sausage Spice Pastes Mashed Potatoes Raisin Roll Canned Sausage