The Complete Guide to Kosher: What Makes Food Truly Kosher?

What Does “Kosher” Really Mean?

Kosher

The word kosher comes from Hebrew, meaning fit or proper. In Torah law, kosher food is food that meets the strict dietary guidelines of the Torah. These laws define what types of animals, ingredients, and preparation methods are considered kosher—and which are not. Being kosher isn’t just about ingredients; it’s about proper preparation and adherence to the laws of Kashrut.

The Complete Guide to Kosher: What Makes Food Truly Kosher?

The Foundations of Kosher Law

Sources: Vayikra י״א; Devarim י״ד

The laws of kosher originate from the Torah, specifically in Vayikra 11 and Devarim 14. Over generations, rabbinic authorities have applied these commandments to modern food production. Today, kosher certification agencies ensure products meet these requirements.

 

Kosher Animals: Who’s In and Who’s Out

Source: Vayikra י״א:ג

To be considered kosher, an animal must have split hooves (Mafris Parsah) and chew its cud (Shosa’at Shesa)
Kosher animals: Cow, sheep, goat, deer
Non-kosher animals: Pig, camel, rabbit, horse

Fish must have fins and easily removable scales (Vayikra י״א:ט–י).
Kosher birds follow the traditional list accepted by Chazal.

 

From Slaughter to Supervision: The Kosher Process

Source: Devarim י״ב:כא; חולין פרקים א–ב

Every piece of kosher meat must come from an animal slaughtered through shechita, performed by a trained shochet. The process ensures humane slaughter and removal of forbidden blood.

Afterward, bedika, soaking, and salting (melicha) prepare the meat properly.

 

The Meaning of “Glatt Kosher”

Source: שו״ע יו״ד ל״ט

“Glatt” means the lungs are smooth and free of adhesions — a higher halachic standard widely accepted today for stringency.

 

Keeping a Kosher Kitchen

Source: Shemot כ״ג:י״ט; שו״ע יו״ד פ״ז–פ״ט

A kosher kitchen requires complete separation of meat and dairy:

Separate dishes and utensils

Separate cooking and serving

Waiting periods between meat and dairy (commonly six hours)

 

Pareve: The Neutral Kosher Category

Source: שו״ע יו״ד פ״ח

Foods with no meat or dairy — such as eggs, fruits, vegetables, and grains — are pareve, meaning neutral. They may be eaten with either meat or dairy meals.

 

Why Kosher Certification Matters

Modern manufacturing is complex. Even kosher ingredients may be processed on non-kosher equipment. Reliable kosher certification symbols guarantee proper supervision at every stage.

 

Kosher Around the World

Kosher standards are known globally for quality and clarity. Many people choose kosher products even without keeping kosher, due to consistent oversight and transparent labeling.

 

The Deeper Meaning of Kosher

The laws of kashrut elevate eating into a mindful, structured practice guided by the Torah.

 

Nachman Harris. Kosher Expert.
Available for any of your questions

Our kitchen kashering service >>

Service Areas:
🟢 All of Israel – year-round kashering
🟢 Jerusalem & Beit Shemesh area — 2 days before Pesach

Private chef for your event/vacation

Ask Us.
Anything.
anytime.