Q. My husband is recuperating in hospital and wants to make Kiddush on Shabbat. To avoid the high sugar content in grape juice is it better he recites Kiddush over tea or coffee, or maybe he should just take a sip and I will drink the rest of the cup, since he is making it for me too? How much water can you add to the grape juice and still make Kiddush on it?
Thank you

A. Horav Shlomo Miller’s Shlit’a opinion is that your husband should take a sip of the grape juice and you should drink the rest (or most) of the cup.

He maintains that you can dilute our common grape juice (not the light one), up to a bit less than half water.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a