Platinum Instant Sourdough Yeast - 5 Packets

I bake bread occasionally and sour dough bread even more rarely. So making a sour dough starter for an occasional loaf is frankly too much effort. So this product seems like just what was needed. It performed wonderfully and provided a beautifully risen dough with a nice tang of sour dough. Just follow the directions and let the dough proof at least 18 hours in the fridge (go to Red Star’s website and see the extended directions for using this product). I saw one comment that mentioned their dough barely rose and they added yeast. My dough quadrupled in size after the first two hours of proofing and the resultant bread was beautifully light. I would recommend against adding any yeast. Another comment said this product turned their bread brown-the yeast/culture mixture comes out of the packet very brown. But this small amount of product did absolutely nothing to color my loaf (a one pound loaf made with 2 cups Kamut flour and 1 cup of bread flour). Reading through Red Star’s recipe I am assuming that one packet of this yeast/starter would service about four cups of flour. The sour dough flavor was noticeable and pleasant-more than enough for my wife and myself (the 18 hours in the fridge really develops the flavor). I presume if you make a starter from scratch and then add a huge amount to your recipe you might achieve a deeper sour flavor. But for us this was more than sufficient. So for you occasional sour dough bakers give this excellent product a try-be a bit patient, follow the directions provided by the Red Star company on their website and you will be amazed at the results.

The yeast dated August 2026 did not work for my sourdough bread. I then tried the AI method for testing of which it also failed. It appears as though it’s a nonreturnable item so I’m out almost $10. I won’t waste my money on this product again.

Platinum Instant Sourdough Yeast is my secret for a delicious homemade sourdough in just 3 hours In the Kitchen with Lulu! It gives that classic sourdough flavor with a beautiful rise and soft, airy texture — without the long starter process. Reliable, easy to use, and perfect for busy bakers who still want that authentic sourdough taste. 🍞✨

I make sourdough bread all the time. What I have found with this product is that it is easier to use than maintaining your own starter and it works just as well if you let it rise overnight in the fridge. The bad thing is that not all their packets are useable . I always proof them before adding it to the flour. That means adding a little sugar, flour and spring water ( about 90 F ) to a coffee mug, placing it in the oven with light on for about 20 minutes. If it bubbles up the yeast is good. In the past I have had to throw out several packets because the yeast was dead. That is unfortunate because it’s rather expensive. So buyers beware not all the packets are usable. I don’t know where the mistake is made in the manufacturing process but to be sure you don’t waste your bread proof beforehand.

Works very well but make sure to use it before it expires. I had some expire and it didn't rise well ...or at all. I added some active yeast to it and it did okay on the last packet. I've ordered this a couple times and will continue.

The first pak of 5 worked good. I may have had one that didn't. I blamed old flour. The ones that worked, worked great! Great bread. Used their recipe. Easy. In the second pak of 5 the very first one didn't work. Dough did not rise. I saved the dough by proofing some other yeast and adding it to the dough that didn't rise. That worked. ' Also, I placed my order in August of 2025 and the expiration date on the Platinum yeast was Sept. of 2025. That's too near expiration. Plan to use soon. In the future I will proof the yeast before adding it to the dough mix. My local stores do not carry this yeast.

Use this everytime to make sourdough bread, everyone loves my bread! Thankyou Amazon!

The yeast arrived with a short expiration window so I got to it as soon as I could on May 21st. Used my regular white bread recipe from Paul Hollywood, 400g bread flour, 8g salt, 7g yeast, 25g butter, and 250ml water. It came together no problem and I set it to prove. I checked it after 1 hr, 2 hrs, and 3 hrs. Nothing. Left it for a few more while I went out shopping and came back to the same thing I left. I ended up making some flatbreads so I didn't waste my ingredients but I definitely wasted my money.