Amazon has the one I buy: https://www.amazon.com/SAF-Instant-...obQ&pd_rd_i=B0049WLQ30&ref_=pd_bap_d_rp_1_1_iI am surprised to find myself without yeast. I have not seen any available in several weeks. I will do this recipe again, but I will add a fat (butter/oil) and a source of sugar. Adding milk was just a whim, but I will do that again.
I don’t know that sd from the refrigerator matters, I’ve done it before. I do think if I have to go without yeast, I will get the sd bubbly beforehand.