Aldi Sink Unblocker [2021] Instant

You could call a plumber (£80+). You could buy the premium brand from the supermarket (£6+).

Set a timer. Do not leave it for hours. The instructions say 15–30 minutes. I find 20 minutes is the sweet spot for kitchen grease. aldi sink unblocker

Carefully pour 250g (about half) directly down the drain. Try to coat the sides of the pipe. You could call a plumber (£80+)