The official OU policy on Mezonos Rolls
Can one rely upon a non-Jew to determine if a non-Kosher food product is cherif (sharp)?
May one place salt into hot food on Shabbos?
Can one arrange fruit on a skewer on Shabbos?
Can on move cholent from the top of a pot onto the blech on Shabbos?
Can one use a “Shabbos light” on Shabbos?
What are the rules for asking non-Jews to do work on Shabbos at hotels and catering establishments?
Some of the rules about food preparation on Shabbos for food establishments and caterers.
What are the laws of Amira l’akum in a hotel?
Can a caterer ask a non-Jew to mop the floor on Shabbos?