Where can I find Baking soda in Gappenach?

Baking soda can also be found in these cities:

Andernach Bendorf Boppard Cochem Kobern-Gondorf Koblenz Lahnstein Mülheim-Kärlich Münstermaifeld Neuwied Nickenich Plaidt Schwall Treis-Karden Waldesch Weißenthurm

You can also find this in Gappenach:

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