Furthermore, when milk is already Batel, it is impossible to become Assur subsequently. You want to extend this to steak sauce where the common usage may be unlikely to contain 1/60, but it is certainly not impossible.
BTW, the Meikilim on Bitul Sakana are: Pischei Teshuva, Chamudei Daniel, Eretz Tzvi, Ramatz, Ein Yitzchok, Avnei Nezer, Maharash Engel, Yad Meir, Yad Eliezer, Degel Efraim and Rav Ovadia Yosef. The Machmirim are: Mekor Maim Chaim, Avnei Tzedek, Maharsham, Yad Yehuda, Shulchan Chai, Atzei Olah, Divrei Yatziv and Rav Chaim Kanievsky