Stiff Starter/Lievito Madre questions

Hello everyone! I recently learned about stiff starters and my interest is peaked.

I don’t have a starter because I don’t like the taste of sourdough, but I would love the health benefits of it. I cold proof all of my breads for long periods of time and I like the taste of that but I find the vinegary taste of sourdough overwhelming. Hence my interest in stiff starter and its milder taste. Now to my problem. All of the stiff starter guides I can find require discard from a regular starter to get going. Does anyone know of a way to start a lievito madre without already having a starter??

Thank you so much!