Floff

Food stuff that has either an indeterminate or indescribable texture, taste or ingredient base.

this cheesecake is like floff, it’s just floff

floffy

To describe an item of food to consistently be of an indescribable ingredient and texture throughout. The food item would be identified as being floff (noun).

Informal adjective.

I can't quite describe this cake, its nice but floffy.