What brand of torn oil-cured olives do you buy and what store sells them?

Hey there! You'll actually be the one to do the tearing by hand (or you can do a rough chop with a knife). You can find oil-cured olives (with pits or without them) at supermarket olive bars, or in jars in the olive aisle, or online: https://www.amazon.com/Cento-Cured-Black-Olives-Jars/dp/B00UAWOOU0/ref=pd_lpo_vtph_325_lp_img_2?_encoding=UTF8&psc=1&refRID=BNY4C9FY3GKQEFGM2RMX. If you can't track them down, you could also swap in Kalamata or Castelvetrano olives—just adjust the amount to taste (since Kalamata olives are particularly salty and Castelvetrano olives are butterier).