Losh: Difference between revisions
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* However, within the very definition of a lav bar gibul, there is a machlokes as to what its halachic status is. Rambam Shabbos 8:16 suggests that because these substances, such as ash or coarse sand never truly fuse with the substance it is being mixed with even when water is added and kneading is done, it is therefore not subject to the melacha altogether. Nonetheless, the Rambam (Shabbos 21:34) writes that would be a rabbinic concern of appearing as lishah. Mishnah Brurah 321:50 quotes this.<br /> Most poskim (Tosfos, Rosh, Rashba, Raavad, and Ran cited by Shaar hatziyun 321:60) however, understand that a lav bar gibul is still subject to the melacha of losh, and therefore in certain circumstances may be dealt with in an even more stringent manner than a bar gibul material, for it would be culpable simply upon addition of water, without any kneading, considering that the kneading does not accomplish anything of significance.</ref> | * However, within the very definition of a lav bar gibul, there is a machlokes as to what its halachic status is. Rambam Shabbos 8:16 suggests that because these substances, such as ash or coarse sand never truly fuse with the substance it is being mixed with even when water is added and kneading is done, it is therefore not subject to the melacha altogether. Nonetheless, the Rambam (Shabbos 21:34) writes that would be a rabbinic concern of appearing as lishah. Mishnah Brurah 321:50 quotes this.<br /> Most poskim (Tosfos, Rosh, Rashba, Raavad, and Ran cited by Shaar hatziyun 321:60) however, understand that a lav bar gibul is still subject to the melacha of losh, and therefore in certain circumstances may be dealt with in an even more stringent manner than a bar gibul material, for it would be culpable simply upon addition of water, without any kneading, considering that the kneading does not accomplish anything of significance.</ref> | ||
== | ==a Mixture Which Was Mixed Before Shabbat== | ||
# Even if the two ingredients were poured one upon another before [[Shabbat]] it is forbidden to knead them together on [[Shabbat]].<ref>Shemirat Shabbat KeHilchata 8:6 based on Beiur Halacha 321:15 s.v. Ein </ref> | # Even if the two ingredients were poured one upon another before [[Shabbat]] it is forbidden to knead them together on [[Shabbat]].<ref>Shemirat Shabbat KeHilchata 8:6 based on Beiur Halacha 321:15 s.v. Ein </ref> | ||
# If two ingredients were kneaded together before [[Shabbat]], it is permissible to add liquid and even mix slowly.<ref> Shulchan Aruch 321:15, Mishna Brurah 321:58, Shemirat Shabbat KeHilchata 8:7 </ref> | # If two ingredients were kneaded together before [[Shabbat]], it is permissible to add liquid and even mix slowly.<ref> Shulchan Aruch O.C. 321:15, Mishna Brurah 321:58, Shemirat Shabbat KeHilchata 8:7 </ref> | ||
# Therefore, if oil separated from peanut butter and floats on top of it, it's permissible to remix it. It would even be permissible to add more | # Therefore, if oil separated from peanut butter and floats on top of it, it's permissible to remix it. It would even be permissible to add more liquids. Adding more solids, however, is forbidden.<ref>Shemirat Shabbat KeHilchata 8:7 </ref> | ||
==A mixture in which the ingredients were precooked== | ==A mixture in which the ingredients were precooked== | ||
