10
votes
2answers
339 views

Are disposable cups allowed for Kiddush or Havdalah?

If one doesn't have a non-disposable cup or becher available, can s/he use a disposable cup? Are there any specific types (plastic, styrofoam, paper...) of disposable cups allowed, or is any cup okay ...
14
votes
4answers
447 views

using two plastic cups for Kiddush

I know making kiddush with a plastic cup is problematic because of requirements. I have seen people using two plastic cups: what is the source for this and is it legitimate?