Its works but drips all the time, maybe thats why only for white wine,If Red wine was used it's easier to see the amt. of dripping
I have enjoyed wine for over 50 yrs. I tried this aerator for white wine, it seems to work BUT it drips all the time unless you play with it. I use it but not the way the instructions tell you.
Its probably better to pour a bottle or 1/2 btl the a funnel into a measuring cup, or decanter & the pour it back from the measuring cup back into the btl or carafe & let it decant & it's aerated.
It's a coin toss.