Hello,
I have a few questions based on previous inquires posted.
- The kind of cheeses that you mentioned in your Teshuva (mozarella, farmer’s, cheddar), even if they contain animal rennet, since the modern version doesn’t fall under the Talmudic category of Gevinah, they can be eaten? I understand that modern animal rennet used in most commercial/industrial cheeses today is inedible and basically a chemical. I guess the problem would be with super fancy traditional cheeses.
- In a previous questions of one user you mentioned that in reality a wallet with debit/credit cards isn’t necessarily Muktzeh. I guess that, if you are in a place with an Eruv and you need to carry your ID due to safety concerns or because you are in a different country, there is no issue with carrying it as usual in your wallet even if it has some bills and cards, right?
- If you are in a country with safety concerns or dangerous, that really require that you carry a phone and your ID for real safety, and you don’t have an Eruv, can it be done as usual for the reasons mentioned?
- You mentioned that credit/debit cards is similar to what the Gemara permits when a person buys on credit. If you are in a place with an Eruv and in an emergency case you need to buy something for your meal that is definitely already prepared before Shabbat, like bread or soda for guests or even when travelling a cold vegetarian sandwich, etc. Can you do it?
I am asking the Halakhic concerns involved by these questions and I understand that even if permitted cultural sensitivity has to be taken into account.
Thank you!


Thank you for your answers. I really appreciate it. I will definitely create a new post for the third question but I have another question about the last topic.
Hypothetically, if you are in a place with a large Eruv, for example during holidays, you could go to a restaurant between the Eruv, sit, relax a little and order a cold drink or a beer and pay with credit/debit card? Or maybe go to a museum or anything that isn’t against the spirit of Shabbat and pay your entry fee with credit/debit card? I guess even for food that wasn’t cooked for you on Shabbat it may be fine.
I understand that this may seem as a full violation by many observant Jews and that sensitivity should be taken into consideration, but, I want to know of Halakhically speaking this is possible. If you can share the sources for this answer to learn them I would really appreciate it.
Yes. Halachicly this would be fine. They do it in all kosher hotels and kosher hotel programs. You order soda or things not included in your meal and they bill you after Shabbat.
Your cheese understanding is correct.
The wallet understanding is correct.
Safety for carrying is more complicated. Give me a better understanding of the scenario. Preferably start a new post for just that.
Getting something for your meal within an Eiruv, by using a credit card or debit card or any other form of credit is permitted. It is done this way throughout the entire observant hospitality industry, where you ask for something on Shabbat and get billed afterwards.