unflushable

Via her excellency Nag on the Lake, we discover that the infamous fatberg of Whitechapel (previously) has been memorialised with a special manhole cover.
The one hundred-thirty tonne blockage discovered beneath the east London district was comprised of an unsavoury amalgamation of wet-wipes, cooking oil and other items that are not meant for the sewer system—sort of like the problem of aspirational recycling whose good intentions can spoil the whole batch which can prove overtaxing for even the best engineered though ageing infrastructure.