Where can I find Sauce powder in Sonceboz-Sombeval?

Sauce powder can also be found in these cities:

Biel Bienne Brugg Delémont Grenchen Ipsach Le Landeron Lyss Moutier Münchenbuchsee Neuenstadt Nidau Saint-Imier Tavannes Tramelan

You can also find this in Sonceboz-Sombeval:

Semolina Porridge Cake Vanilla Sugar Jelly Ice Cream Desserts Meat Products Lemonades Instant Coffee Pumpkin Seed Roll Canned Meat