Forgive me if you know these already – but if you don’t, they are such useful tips and worth passing on.
When you are pouring things through a funnel, they will funnel faster if there is an airspace between the funnel and the container.
So not like this…
But like this – a teaspoon handle slipped into the neck of the bottle creates a sufficient gap to speed things up.
Powder [flour etc] also funnels faster with some air
This is some cooking oil, being filtered through a piece of kitchen paper. I have a great fondness for bottles with these wire closures!
If I am pouring powder through a funnel, I drop a skewer into it first.
Then if the powder clogs up, I can wriggle the skewer and it starts everything flowing freely again.