אורח חיים שכ״אOrach Chayim 321

Se’if 1א׳

חֲבִילֵי פֵּאָה אֵזוֹב וְקוֹרָנִית (פֵּרוּשׁ מִין עֶשֶׂב), הִכְנִיסָן לָעֵצִים, אֵין מִסְתַּפְּקִין מֵהֶם; הִכְנִיסָן לְמַאֲכַל בְּהֵמָה, קוֹטֵם וְאוֹכֵל בַּיָּד, אֲבָל לֹא בִּכְלִי, וּמוֹלֵל בְּרָאשֵׁי אֶצְבְּעוֹתָיו.

The Laws Governing Detaching [Produce] on Shabbos; the Laws Governing Grinding; the Laws Governing the Preparation of Food, Leatherworking, and Kneading, 19 Seifim: If [before Shabbos,] one brought in bundles of wild hyssop, hyssop, or thyme to dry so that they would be fit for kindling, one may not make use of them on Shabbos. If one brought in [bundles of the leaves of these plants] for use as animal fodder one may break off portions from them and eat them with his hands but not with a utensil (as he would during the week). The stalks may be crushed with one’s fingertips

Se’if 2ב׳

אֵין עוֹשִׂין מֵי מֶלַח הַרְבֵּה בְּיַחַד לָתֵת לְתוֹךְ הַכְּבָשִׁים, מִשּׁוּם דְּדָמֵי לְעִבּוּד, אֲבָל יָכוֹל לַעֲשׂוֹת מִמֶּנּוּ מְעַט לָתֵת לְתוֹךְ הַתַּבְשִׁיל; וְאִם נָתַן לְתוֹכוֹ שְׁנֵי שְׁלִישֵׁי מֶלַח, אָסוּר לַעֲשׂוֹת מִמֶּנּוּ אֲפִלּוּ מְעַט.

It is prohibited to prepare a large quantity of saltwater for pickling because it looks like preparing for Tanning. However, one is permitted to prepare a small quantity in order to add it to a cooked food. It is forbidden to prepare even a small amount of a saline solution that is two parts salt and one part water.

Se’if 3ג׳

אָסוּר לִמְלֹח חֲתִיכוֹת צְנוֹן, ד' אוֹ ה' בְּיַחַד, מִפְּנֵי שֶׁנִּרְאֶה כְּכוֹבֵשׁ כְּבָשִׁים, וְהַכּוֹבֵשׁ אָסוּר מִפְּנֵי שֶׁהוּא כִּמְבַשֵּׁל; אֶלָּא מְטַבֵּל כָּל אַחַת לְבַדָּהּ, וְאוֹכְלָהּ. אֲבָל בֵּיצִים, מֻתָּר לְמָלְחָן.

One is forbidden to salt four or five pieces of radish together because it appears as if one is pickling, and pickling is forbidden because it is similar to cooking. However, one may dip each individual piece and eat it. One may salt eggs.