Charade, glad your flushing again.
This has been a very helpful Public Service thread. I'm sure many other readers have been able to successfully avoid what you just went through.
I had to flush what was a greasy pot of clam sauce last nite, after the can of clams I added didn't look right. using your directions,

I scooped in a little at a time, flushed, scooped some more, flushed again, repeated, till whole pot was gone. Then I added Dawn with hot water, to make sure it didn't all clog somewhere down the line.
It actually seems to flush better than before after the Dawn!