<p>20. Under the chuppoh. There is a minhag for the chosson to break a whole glass cup under the chuppoh (רמ"א או"ח סי' תק"ס ס"ב ואהע"ז סי' ס"ה ס"ג ). This does not transgress bal tashchis since it is done to indicate to those present that they should reflect on the aveilus for Yerushalayim (פמ"ג משב"ז או"ח סי' תק" ס סק"ד, מ"ב שם סק"ט ).</p>

An explanation of the custom for a groom to break a glass under the chuppah to remember the destruction of Jerusalem, addressing the concept of bal tashchis.

Breaking the Glass Under the Chuppoh

A halachic guide to the laws of Bal Tashchis (the prohibition against wasteful destruction) in preparation for Pesach.