Do you need to leave bark in for q21q21's tek?

[theMadcapLaughs]

I am going to try q21q21's tek today and i was wondering if i need to leave the bark in or can i use my buchner funnel to extract the liquid then add the lime?

 

[q21q21]

I've heard of one person removing the bark with success but I tried twice with 0.00% yield. So I would not recommend it, not with lime at least, lye works fine in that way (boiled, filter, etc)