Sorting food on Shabbat (borer) is a Torah-level melachah. The Shulchan Aruch (Siman 319) permits it under three cumulative conditions: take the food (okhel mitokh psolet), by hand and not with a utensil, and to eat right away (l'alter).
Sorting in advance, removing the waste, or using a sorting tool is a problem; for a concrete case, ask your Rav.
Sorting (בּוֹרֵר) is a Torah-level melachah on Shabbat. But the Shulchan Aruch (Siman 319) teaches a permitted path under three conditions: take the food (not the waste) — אוכל מתוך פסולת; do it by hand (ביד) and not with a sieve; and to eat right away (לאלתר). Sorting in advance, removing the waste, or using a sorting tool is a problem. For your concrete case — ask your Rav.
Removing the pits from a fruit salad, taking the spoiled leaves out of a green salad, separating the good fish from the bone: everyday gestures that touch on one of the 39 melachot — בורר (sorting). Siman 319 devotes many seifim to it. Let us see what the source says.
Why is sorting a melachah on Shabbat?
Sorting is one of the labors forbidden by the Torah. But not all sorting is forbidden: seif 1 immediately sets out the conditions that draw the line between the liable act and the permitted gesture:
הַבּוֹרֵר אוֹכֶל מִתּוֹךְ פְּסוֹלֶת… בְּנָפָה וּבִכְבָרָה חַיָּב… וְאִם בֵּרְרָם בְּיָדוֹ כְּדֵי לֶאֱכוֹל לְאַלְתַּר מוּתָּר.
"One who sorts the food from the waste… by means of a sieve or a strainer is liable… but if he sorts by hand to eat immediately — it is permitted."
The Rema adds: "וְכָל מַה שֶּׁבּוֹרֵר לְצוֹרֶךְ אוֹתָהּ סְעוּדָּה… מִקְרֵי לְאַלְתַּר" — whatever one sorts for the meal one is sitting down to at once is called "immediate," even if others eat with you. From which it is permitted, he says, to sort the salad of its spoiled leaves for that meal.
The 3 conditions of permitted sorting
1. Okhel mitokh psolet — the food, not the waste
You take what you want to eat, and not what you throw away. Seif 4 rules the reverse: "הַבּוֹרֵר פְּסוֹלֶת מִתּוֹךְ אוֹכֶל… חַיָּב" — one who removes the waste from the food is liable, even by hand, and even if sorting the food would be more burdensome.
2. Beyad — by hand, without a tool
Permitted sorting is done by hand. Seif 1 makes one liable for using a sieve or a strainer (נפה וכברה); seif 7 adds that one does not separate with a קנון or a תמחוי (sorting tools), nor with two hands, but with one hand only.
3. Le'altar — to eat right away
The sorting must aim at the immediate meal. Seif 2 illustrates it: sorting the food "to set it aside" — even to consume it later the same day — is "כְּבוֹרֵר לְאוֹצָר" (sorting for storage), and one is liable.
And the particular cases of the source?
| Seif | Case | What the source says |
|---|---|---|
| 1 (א) | Salad and spoiled leaves | Permitted to sort by hand for that meal (Rema) |
| 2 (ב) | Sorting to set aside | "Sorting for storage" → liable, even for later the same day |
| 3 (ג) | Two kinds of food mixed | Take one and leave the other to eat right away |
| 4 (ד) | Removing the waste from the food | Liable, even by hand, even if it is more burdensome otherwise |
| 10 (י) | Filtering an already-clear liquid | Permitted to filter a clear wine or water; cloudy → forbidden |
Seif 10 thus distinguishes a liquid that is already clear (which one may filter) from a cloudy liquid (which one does not filter) — proof that the boundary hangs on very fine details.
And washing dishes on Shabbat?
The question of "doing the dishes" falls under rules other than those of sorting (preparing for after Shabbat, the use of water, sponges, etc.). Siman 319 deals with בורר — separating the good from the bad in a mixture — and not with dishwashing as such. As for cleaning the dishes, that is a separate topic.
This article presents what the source says for the purpose of study. The rules of בורר are among the most intricate of Shabbat (direction of sorting, tool, timing, type of food). To know what is permitted in your kitchen, ask your Rav.
Frequently asked questions
Can you sort food on Shabbat?
Sorting (בורר) is a Torah-level melachah; but separating the food from the waste, by hand, to eat immediately, can be permitted per Siman 319. Using a sieve or strainer makes one liable. For practice, ask your Rav.
What does אוכל מתוך פסולת mean?
"The food from the waste": taking what you want to eat, not removing the waste. Removing the waste (פסולת מתוך אוכל) makes one liable, even by hand.
What does לאלתר (to eat right away) mean?
"Immediately": sorting for the meal one begins at once. The Rema includes the meal even if others eat with you. Sorting to set aside is "sorting for storage" and makes one liable.
Study Siman 319 in depth
Four levels, from beginner to talmid chacham — Hebrew text, translation, pilpul and the shitah of the Admur HaZaken.