Hi, Perovskia!
If you are still looking for the answer, then:
Pirukatäidis is the stuffing or filling of a pie, for example:
Lihapirukates kasutatakse pirukatäidisena (or simply
täidisena)
liha. - In meat pies, meat is used as the stuffing/filling of the pie.
About the berries of
lodjapuu - well, I don't remember seeing them myself in the forest, but I have heard that they are mostly used (like most of the other stuff from our forests
) as quite general purpose medicinal herbs (you can also use the flowers and the bark) - I guess mostly as tea. But of course you can eat them any other way you want - lot's of vitamin C.