--- product_id: 168744039 title: "Platinum Instant Sourdough Yeast - 5 Packets" brand: "red-star" price: "£9.85" currency: GBP in_stock: true reviews_count: 8 category: "Red Star" url: https://www.desertcart.co.uk/products/168744039-platinum-instant-sourdough-yeast-5-packets store_origin: GB region: United Kingdom --- # 18+ hour cold proofing serves 4 cups flour per packet 5 convenient single-use packets Platinum Instant Sourdough Yeast - 5 Packets **Brand:** red-star **Price:** £9.85 **Availability:** ✅ In Stock ## Summary > 🍞 Elevate your home baking game with instant sourdough magic! ## Quick Answers - **What is this?** Platinum Instant Sourdough Yeast - 5 Packets by red-star - **How much does it cost?** £9.85 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/168744039-platinum-instant-sourdough-yeast-5-packets) ## Best For - red-star enthusiasts ## Why This Product - Trusted red-star brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Portions:** Five perfectly measured packets ensure fresh, consistent results every bake. - • **Vegan & Clean Label:** Pure, plant-based yeast powder for conscious bakers who demand quality. - • **Effortless Artisan Bread:** Skip the starter hassle—instant sourdough yeast delivers authentic tang with zero fuss. - • **Reliable Rise, Every Time:** Quadruple your dough volume in just hours—no extra yeast needed. - • **Flavor-Forward Fermentation:** Extended fridge proofing unlocks deep, complex sourdough notes for millennial palates. ## Overview Red-Star’s Platinum Instant Sourdough Yeast comes in a pack of 5 single-use packets, each designed to ferment about 4 cups of flour. This vegan, instant dry yeast enables a hassle-free sourdough experience with an 18+ hour cold proofing process that develops authentic tang and a light, airy crumb. Ideal for occasional bakers seeking artisan-quality bread without the starter maintenance. ## Description 5 Packets - Instant Sourdough Yeast Review: Excellent Product - 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. Review: Yeast doesn't raise dough - This item is a huge disappointment. I am an experienced bread maker and tried to use this yeast for my sourdough artisan bread. No matter what i did the dough didn't rise. I've never ad this issue wiht other brands of yeast so my assumption is it's this particular brand. Don't waste that huge amount of money! ## Features - Instant Sourdough Yeast - 5 Packets ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Z5D1VR5 | | Best Sellers Rank | #30,961 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #32 in Active Dry Yeasts | | Brand | Red-Star | | Brand Name | Red-Star | | Coin Variety 1 | Yeast | | Container Type | Packet | | Cuisine | French | | Customer Reviews | 3.7 out of 5 stars 925 Reviews | | Item Form | Powder | | Item Package Quantity | 1 | | Item Package Weight | 0.1 Kilograms | | Item Weight | 100 Grams | | Leavening Agent Type | Instant Dry Yeast | | Manufacturer | Red-Star | | Number of Items | 5 | | Number of Pieces | 5 | | Part Number | asd6991 | | Size | 0.63 Ounce (Pack of 5) | | Specialty | Vegan | | UPC | 363307755098 | | Unit Count | 3.15 Ounce | ## Product Details - **Brand:** Red-Star - **Item Form:** Powder - **Item Weight:** 100 Grams - **Number of Items:** 5 - **Unit Count:** 3.15 Ounce ## Images ![Platinum Instant Sourdough Yeast - 5 Packets - Image 1](https://m.media-amazon.com/images/I/41hYEnWqJGL.jpg) ![Platinum Instant Sourdough Yeast - 5 Packets - Image 2](https://m.media-amazon.com/images/I/41rtfVWnvtL.jpg) ## Questions & Answers **Q: What is the expiration date on these?** A: When I ordered (fall 2021) the expiration date was about a month away. So I only used 2 and threw away the 8 packets in March. Really couldn’t tell the difference in using Platinum instant over regular instant. Will not order again. **Q: Why is the best used by date in a couple of days from when I received it?** A: I can't answer for the seller but I've used expired yeast way beyond the date. As long as it bubbles up in warm 110° water with a little sugar added, you're fine. **Q: Can I use red star instant sourdough yeast in my bread machine?** A: This product makes wonderful bread in our Zojirushi bread machine. **Q: Are instructions included? I am used to 7 grams of yeast for kneaded bread, and only a half-teaspoon for my no-knead, which I prefer.** A: The back of the package says “Use it in any recipe that calls for yeast. Simply substitute this package for one 1/4 ounce packet of RED STAR yeast.” It also says you can visit the Red Star Yeast website for information and recipes. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent Product *by R***A on November 12, 2025* 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. ### ⭐ Yeast doesn't raise dough *by S***N on October 13, 2025* This item is a huge disappointment. I am an experienced bread maker and tried to use this yeast for my sourdough artisan bread. No matter what i did the dough didn't rise. I've never ad this issue wiht other brands of yeast so my assumption is it's this particular brand. Don't waste that huge amount of money! ### ⭐⭐⭐⭐⭐ Bakery-Style Sourdough in 3 Hours | In the Kitchen with Lulu 🍞✨ *by L***A on February 18, 2026* 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. 🍞✨ ## Frequently Bought Together - Platinum Instant Sourdough Yeast - 5 Packets - Red Star Platinum Premium Instant Yeast with Dough Enhancers - Three 1/4 oz Packages per Sleeve (Two Sleeves for Total of 6 pkgs) - Red Star Active Dry Yeast, 2 Pound Pouch --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/168744039-platinum-instant-sourdough-yeast-5-packets](https://www.desertcart.co.uk/products/168744039-platinum-instant-sourdough-yeast-5-packets) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-27*