We use Filtered groundnut oil for cooking at home. However, we recently changed the brand due to non-availability during COVID-19 lock-down. While pouring the last bit of oil I saw this at the bottom. The brown coloration was stuck to the walls of the can and some of it was floating in the leftover oil (not clearly visible here). It looked flaky.
Was the oil impure/adulterated/unhealthy? Or is this normal for filtered groundnut oil?