Is There a Problem with Spreading Foods (e.g., Peanut Butter, Cheese, Hummus, etc.) onto Challah, Matzah, etc. on Shabbos?;
(Squeezing materials.) the correct procedure in reference to wiping up spills on a counter, table or floor with a towel or rag;
rough estimates with a food scale; measuring from a drinking cup; measuring for a small child;