Reply To: Techeiles 🔵❎🐌☑️🐟

To answer one of your previous kashyas:

I didn’t realize this earlier – Rav Shlomo Miller wasn’t saying that plant indigo is not kala ilan. He was saying that since murex trunculus is the same exact chemical(s) as plant indigo, mimayla murex trunculus is also kala ilan. This answers your kashya of why the gemara didn’t warn against using murex. It did. The Gemara warned against using Kala Ilan, which includes Murex Trunculus.