[Avodah] Chalav Yisrael: Required or Recommended?

[Zev Sero]

On 21/01/18 19:00, Micha Berger via Avodah wrote:
> Also, it's clear Rav Moshe's language shifted as chalav Yisrael (CY)
>     became more available, in the earliest responsum treating CY as a
>     stringency above the baseline (Igeros Moshe YD 1:47-49), the middle
>     more equivocal (2:31,35) and the latest (4:5) more like not insisting
>     on CY being a leniency.

You're starting one siman too late.  Any survey of RMF's shita has to 
start with siman 46, where he expresses astonishment at the asker's 
expression "for those who are careful with stam milk that comes from 
nochrim" and explicitly writes that "all Ashkenazi Jews" pasken like the 
Chasam Sofer and not like the Radvaz and Pri Chodosh.  So the baseline 
is that CY is an obligation, not a hiddur, but commercial milk is not 
included in the gezera, as he goes on to explain in the next three simanim.

-- 
Zev Sero            A prosperous and healthy 2018 to all
zev at sero.name       Seek Jerusalem's peace; may all who love you prosper