How can a defective cup be remedied?

Does Birkat Hamazon require a cup (kos) even when one eats alone?

6 opinions across 3 eras

Is wine required for the cup of Birkat Hamazon, or may other beverages be used?

4 opinions across 3 eras

What constitutes a defective cup (kos pagum) and what are the rules?

3 opinions across 3 eras

If the cups of those who are reclining are defective, must the one blessing provide them wine from his cup?

3 opinions across 3 eras

What happens if wine from a defective cup is poured back into a wine jug?

3 opinions across 3 eras

May one bless over a defective cup in a pressing moment (shaat hadchak)?

2 opinions

For a single person eating alone, should the cup of blessing be held in the hand or placed on the table?

3 opinions

Must one wait for a cup even if it means delaying a meal, if one anticipates having a cup available?

3 opinions across 3 eras