Polish chocolate biscuits

[lankeela]

Years ago a schoolfriend had a Polish father and we used to buy packets of chocolate biscuits which had a sort of ginger flavour filling. They were square and came in packs of six or eight, about the size of Cadbury Snack biscuits, but thicker filling. Any idea what they were called? The wrapper was sort of greaseproof, bit like the old bread wrappers.