Lanzhou is the landlord, which means the sponsor of the post.
Sesame cake is SB.
The pinyin abbreviations of Lanzhou baked wheat cake and landlord SB are both LZSB. For the sake of "civilized language", Lanzhou baked wheat cake is adopted.
In addition, there is indeed Lanzhou sesame seed cake in Lanzhou, which is called Muslim cake locally, which is a kind of cake baked with hair flour (no oil, salt and sugar). Because it is tasteless, it is usually eaten as a dish or soaked in mutton soup. Roasted mutton can be used to sandwich cakes. It's delicious!