Unfortunately, Best's Kosher hot dogs are no longer being made.
No
There should be no problem with boiling a kosher hot dog. As a matter of fact boiling hot dogs is VERY common.
Only if it is labeled as such.
No. Kosher hot dogs are made from 100% pure beef.
Don't you mean "starters?" I recommend kosher hot dogs in a blanket.
No. Tongue is a separate meat.
No.
Meat only
100% pure beef. Kosher hot dogs are made from kosher meat which does restrict the cuts of meat that can be used. You can find kosher hot dogs made from beef, veal, chicken, and turkey. They do contain the normal seasonings found in hot dogs including nitrates.
Hebrew National hot dogs are kosher (in spite of what some members of the Orthodox community say).
Yes, there are plenty of soy free hot dogs. The best way to ensure you have a soy free product is to buy Kosher ALL BEEF hot dogs.