Here's a funnel for putting oil in a car:
It has slots on the side to allow air to flow out as oil flows in.
Anyone know of funnels for the kitchen with this feature?
It shouldn't be too hard touts lots into a plastic funnel if this is important to you.
Hmmm, I think you meant "to put slots."
Need more coffee. "...to cut slots...".
I'm half awake and using an iPad. Keyboard sucks.
If the funnel doesn't have ridges it blocks the neck of the bottle and the air in the bottle air can't pass out as oil enters it so the oil will stop running through the funnel. The ridges on the funnel allow the air to be displaced by the oil.Hmm, In the kitchen the only time I am concerned about air in something is making pickles or canning something. Then I just run a chop stick around inside the jar to work out any possible air bubbles before sealing.
Not sure when else is a concern.