Where can I find Tri-grain toast in Mürzzuschlag?

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

Alpl Ganz Kindberg Kirchenviertel Krieglach Rettenegg Sankt Barbara im Mürztal Sankt Kathrein am Hauenstein Sattledt Spital am Semmering Trattenbach Vorau Waldbach Wenigzell

You can also find this in Mürzzuschlag:

Cornstarch Spread Sweet Ice Cream Rice Dishes Instant Iced Coffee Poppy Seed Roll Canned Fruit Olive Oil Champagne Aperitif