Sifting OU Flour

Does white all purpose flour with an OU have to be sifted? I just used Heckers in a recipe, and realized that it doesn’t say presifted. Answer: The flour does… Read more »


Tuna Fish

Is Tuna Fish kosher? Answer: Yes. It has fins and scales. However, it is preferable to use tuna with a hechsher, which guarantees that other non-kosher fish have not been… Read more »


Barramundi Fish

Is barramundi fish kosher? Answer: To my knowledge, it possesses fins and scales, making it a kosher fish.


Is Tilapia Fish Kosher?

Is tilapia ok to eat? Answer: According to, there are more than 30 different species that could be referred to as tilapia. The U.S. Food and Drug Administration (the… Read more »


Wine in Fridge Door

If one has non mevushal wine opened and one’s non jewish cleaning lady opened the refrigerator and therefore moved the wine because the wine is on a shelf of the… Read more »


Reassembling an Electric Urn

I bought an electric urn. According to Reb Moshe zts”l the internal electric wiring does not require tevilah. Would taking apart the internal mechanism and re-assembling it relieve the requirement for… Read more »


Why Is Milk Kosher?

How is it todays milk considered kosher? In the past chazal were matir milk because one could assume that the majority of cows are kosher and therefore the milk is… Read more »


Dairy Onions

I cut up onions with a dairy knife and put them into dough which I then placed in a Challah Pan. It was baked in a dairy oven. Are my… Read more »


Kashrus Boards

What are the main differences between rabbanut mehadrin, and, let’s say, Rav Rubin or Bedatz? Answer: The main differences between the different kashrus boards are in the level of supervision… Read more »


Uncovered Water

What are the exact halachos of mayim megulim? How long can the water be uncovered? How large can the opening be for it to become assur? Is it only overnight?… Read more »


Visible Bugs

What is the definition of a bug that is forbidden to eat. Let’s say the one can see a litte dot with the visible eye, but then if one were… Read more »


Chopped Spinach

Can one use supermarket frozen chopped spinach? Answer: If the spinach is finely chopped (this is usually the case), it is permitted for consumption. If the leaves are cut but… Read more »


Kashering the Microwave

When kashering my microwave, does it matter if the vessel is milchig or fleishig? What happens to the vessel when the microwave becomes kosher? Answer: Several authorities have written that… Read more »


Not Kosher Medicine

I take a special medicine voluntarily called Creon. It is an enzyme meant to break food down easier in the digestive system. I just found out it is made of pork… Read more »


Pyrex Pans

About 15 yrs ago we moved to a different country and left our things in storage for around 7 years. Nothing was used. When we finally received our household items,… Read more »


Mexican Fish

We moved recently to Mexico. There is a frozen fish here with a Mexican hechsher. the fish is filleted and has no scales that can be seen. I called the… Read more »