[Avodah] Bishul achar shelo bederekh bishul

[Micha Berger]

Here's the case:

I made a cup of tea on shabbos, green tea so it certainly started out raw,
so I did so in a "keli shelishi". (There is no concept of keli shelishi,
I mean I avoided irui keli rishon.)

Now I wanted to make a second cup using the same leaves. Would it have
been okay to rely on ein bishul achar bishul, or do we saw that the
first lo kederekh bishul means that this is the first bishul?

Does derekh bishul necessary to define bishul or the issur?

I asked R' (and Dayan) Jack Love in shul, and he connected the question
to the Pri Megadim's kulah on soup. The PM holds that while bishul achar
bishul is assur WRT water, it doesn't apply to soup which actualy gets
changed through the cooking. (The PM lumps milk with water, but that
raises metzi'us questions.)

RJL suggested that the PM defines bisul achar bishul in terms of impact on
the item, and therefore would apply even if the tea got changed through a
"lav derekh bishul".

That seemed rational to me WRT my case of the tea, but I'm not sure
that's really peshat in the PM.

What do you think?

Gut Voch!
-mi

-- 
Micha Berger             When faced, with a decision, ask yourself,
micha at aishdas.org        "How would I decide if it were Ne'ilah now,
http://www.aishdas.org   at the closing moments of Yom Kippur?"
Fax: (270) 514-1507                            - Rav Yisrael Salanter