Guides Treif is any food that is not kosher. The word covers pork and shellfish, a cheeseburger that mixes meat and dairy, and even a candy that hides pork gelatin in the fine print. Here is what makes a food treif, and how to catch it on a label.
Certifications Mehadrin and Badatz both point to a higher tier of kosher supervision that goes beyond the basic standard. Mehadrin means the agency followed the stricter opinion at each step, and Badatz refers to a rabbinical court whose certification is usually held at that mehadrin level. Neither one means a regular hechsher is unreliable.
Certifications Pas Yisroel means bread that a Jew took part in baking, most often by lighting the oven. It is a higher standard than basic kosher certification, kept by some communities and treated as optional by others. Here is what the term covers and how to recognize it.
Certifications A hechsher is the small symbol a recognized kosher agency prints on a product to show a rabbi supervised how it was made. It is the difference between real certification and a brand simply calling itself kosher. Learning to spot and read one is the single most useful habit for any kosher shopper.
Certifications Chalav Yisrael is dairy watched by an observant Jew from the moment of milking. Chalav Stam is commercial milk produced under government supervision without that presence. Which one you keep is a matter of community custom and your own rav, not a line between kosher and not kosher.
Is It Kosher? Yogurt often contains gelatin, and when it does, that gelatin is usually not kosher unless the tub carries a trusted hechsher. Plain yogurt frequently skips it, while flavored and low fat cups are the ones to watch. The label tells you almost everything you need to know.