Life’s best occasions are made from scratch, combining good friends and good food. Get a head start on enjoying both with Platinum Instant Sourdough Yeast by Red Star. It’s a baking breakthrough. It starts with Platinum Superior Baking Yeast with natural dough strengtheners for better oven spring and finished volume. Then, Red Star adds real sourdough culture to create authentic sourdough flavor in any recipe. That means less no fussing with a finicky sourdough starter culture, leaving you more time to savor summer’s made-from-scratch moments.