Re question 4087. While carrying out the procedure of opening a grape juice bottle as described by the Rav, lets say one bachur offers to open it in the regular manner relying on the lenient opinions. How should the Rebbi respond? Is it permitted to use after the fact?

Since the lenient opinions mentioned above are not usually accepted, one should refrain from doing it. However, after the fact if the grape juice bottle was opened in the regular manner, Horav Dovid Pam Shlit’a and Horav Aharon Miller Shlit’a rule that if it was done ‘Beshogeg’ or by mistake and lack of knowledge, it can then be used.