Halocho #2241 - Cooking in cold water

Cooking is forbidden on Shabbat.

Food that is impossible to eat without first being rinsed, may not be rinsed on Shabbat even in cold water.

Salty fish, like herring,  may be rinsed in cold water since it was (somewhat) edible even before being rinsed.

Source: Kitzur Shulchan Aruch 80:6

Shabbat Shalom,

- Danny
Thursday, 16 Adar 5779

דָּבָר שֶׁאִי אֶפְשָׁר כְּלָל לְאָכְלוֹ בְּלִי הֲדָחָה, אָסוּר לַהֲדִיחוֹ בַּשַׁבָּת אֲפִלּוּ בְּצוֹנֵן

וְדָג מָלוּחַ (הערינג) מֻתָּר לִשְׁרוֹתוֹ בְּמַיִם צוֹנְנִים, לְפִי שֶׁגַּם קֹדֶם הַשְּׁרִיָּה רָאוּי לַאֲכִילָה