– Q. See question above. Kvod Harav. What is one does not enjoy that wine drinking? Is grape juice sufficient? What is the minimum of wine or grape juice one should drink and how diluted, to comply with the mitzva?

A. Halichos Shlomo (9: 11 p. 217) and other Poskim maintain that one complies in need also with grape juice, yet it is better if it is mixed with some wine. He quotes Horav Shlomo Zalman Auerbach Zt’l as doing so as well as the Tshubiner Rov Zt’l.
Horav Shlomo Miller’s Shlit’a opinion is similar.

Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a.