Weekly Q&A about Jewish law
Answered by Rabbi Agisthein
QuestionCan I use a sieve to spread confectioner’s sugar over a cake on Shabbos?
One of the 39 Melochos is Merakid - using a sieve to sift and remove unwanted substances from a mixture. Therefore, when it comes to spreading confectioner’s sugar it would depend on why you`re using the sieve. If your goal is to sift out the large solidified clumps of sugar, then that would be prohibited. If, however, you are simply using the sieve as a way to spread a fine even layer, then it would be permitted; as long as there are no large clumps that are also automatically being sifted out as well (39 Melochos pg 508).
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