I was hesitant at first to buy this product, however the quick rise yeasts are scarce on the market shelves anymore, leaving the choice of regular yeast, yeast bars, bread machine yeasts and instant yeasts.  This product works as well, producing successful rises each time I bake.  I'm hooked, and will continue to use this product.  I like the fact that it is sold in a large quantity, thus, keeping return trips to the store to the minimum. I'll be ordering this from now on through Amazon.