Due to the space limitations of a text message, please note that it is particularly important to read carefully, pay close attention to the context of the question, and use the answers as a springboard for further study.
Q: Should I replace a worn set of tzitzis strings even when only one string has been torn off by accident?
A: If only one out of eight strings is torn the tzitzis are still kosher.
Q: How many tzitzis strings need to be torn at one corner for a pair of tzitzis to stop being kosher? To what degree do said strings need to be torn?
A: Unless the tzitzis were made in a special way, a corner is disqualified if two strings are torn and there is not enough left from at least one string protruding from the knot to make one small loop OR if even only one string breaks where they are attached to the garment it is disqualified.
Q: Is a Hemp Protein Bar, containing cranberry, oat, almond, and cashew that is labeled as vegan kosher?
A: It is not a kosher sensitive product but it is customary to require a hechsher under normal circumstances.
Q: How often should I get a new kippa to wear?
A: When to buy a new kippa is a subjective decision. But in general, it is a Torah value that our clothing should be neat, clean, and presentable.
Q: Can one buy Jaffa oranges if there is no indication that whether or not terumah and maaser (tithes) was taken? It might then be a bracha l’vatallah if it was maybe? Or is there no bracha and you just remove some?
A: You would remove it without the bracha by following the instructions available online (or in the new Artscroll Siddur) but first check for an OU on the box since they certify Jaffa oranges.
Q: Can you kasher liver by holding it on a skewer over a stove-top burner?
A:Yes but you should remove the grate and cover the area around the flame since the blood that exudes from the liver will render as non-kosher whatever it comes into contact with. The skewer is also rendered non-kosher (until it is kashered by holding it in a flame until it glows) for all uses except kashering liver.