mbjellen
Mbjellen is a term that can refer to several different things, depending on the context. In some regions, particularly in Scandinavia, it may be a colloquial term for a type of pastry or baked good. These pastries often feature fruit fillings, such as berries or apples, and are sometimes made with a sweet dough or a crumb topping. The specific ingredients and preparation methods can vary widely from one area to another.
Alternatively, "mbjellen" could be a misspelling or a lesser-known variant of a word in a different language