Where can I find Tri-grain toast in Hackerberg?

Tri-grain toast can also be found in these cities:

Bad Waltersdorf Bocksdorf Burgau Deutsch Kaltenbrunn Güssing Hofkirchen bei Hartberg Ilz Kohfidisch Lafnitz Markt Allhau Neuberg im Burgenland Neudau Oberschützen Oberwart Ottendorf an der Rittschein Stadtschlaining Söchau Wolfau

You can also find this in Hackerberg:

Cake Glaze Peanut Butter Ice Cream Desserts Meat Products Instant Coffee Poppy Seed Roll Canned Fruit Olive Oil Champagne Aperitif