I have finished a bowl with wipe on poly and then buffed it with super fine polishing compound. I got a great finish but I was left with compound in the open grain. Now I have this nice finish with fine white streaks. What is the best way to clean it out of the grain or maybe I can not.
Thank you

With certain types of woods, notably black walnut, this is a common complaint with the white compound.  The usual method is to avoid the use of the white compound with those woods. The red compound doesn't seem to have the issue, probably mostly because the darker red blends into the darker color of the wood.

Once the wood has the white in the grain, you might be lucky enough to be able to wipe or scrub it out - otherwise, you can sand it down to bare wood and start over.

Thank you all.

I finally solved my problem by resanding and applying a water based finish. I thinned it 30% which helped a lot. I used that primarily because of the faster drying time. I then used 3M polishing sheets after each coat. Ended up with a nice glossy, but not too glossy, finish.
Thanks all again for your input.

Dave,
Here is an Amazon link
Zona 37-948 3M Wet/Dry Polishing Paper, 8-1/2-Inch X 11-Inch, Assortment Pack One Each 1, 2, 3, 9, 15, and 30 Micron Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to or
It has 1 to 30 micron. 30 = 600 grit and 1= 14000 grit.