From a beautiful Laetiporus cincinnatus found earlier in July. It was in great shape, but the lower layers had grown around a fair amount of stiltgrass, and I didn't want to hog it all.
Young specimens are edible if they exude large amounts of a clear to pale yellow watery liquid. Only the young outer edges of larger specimens should be collected, as older portions tend to be tough, unpalatable, and bug-infested.
That was the one. Wikipedia says:
I did not follow this advice (no bugs though).
Dang. I'm glad it at least didn't make you sick!
I just trusted my taste buds. Pity though, they're large and I got a lot of sauce quite similar to your recipe, which I then had to throw out.
I'm not much of a forager but next time I'll remember. They're easy to recognize.