I store mine in the freezer, and I use it directly from the freezer. I was surprised at first that this worked, but I've read that because it's granular it pretty much defrosts instantly--kind of like when you need room-temperature butter and all you have is frozen, you can grate it to get it to room temp right away. Apparently it's a surface-area thing.

I'm on my third package of Costco Red Star yeast. It keeps forever in a sealed ziplock baggie in the freezer. I use it as I would any active dry yeast. Price is great, as are so many of the grocery items at Costco. I just bought a giant container of Vietnamese cinnamon for about $2.50. We also have the quinoa - makes great salads and sides. I still have the carton of dates which I use for sticky toffee pudding - thinking about this for T'giving. The only problem with Costco is everything comes in huge sizes. Cheryl

I use both Active Dry Yeast and a Fast-Rising Yeast (SAF-Instant) in the bread machine and for recipes I make by-hand. These yeast products are, and they are NOT, interchangeable, depending on it's application - just to complicate the issue for you. I tend to respect the type of yeast called for in a recipe. I also know when a recipe calls for Active Dry Yeast and I use a Fast-Rising Yeast, I should also reduce the amount by 25% or it will rise too quickly. This is especially important in a bread machine because the rise is TIMED, and you can find your bread dough pushing the lid off the bread machine because you've actually added TOO much yeast. The Fast-Rising Yeast products were originally used to make bread quicker by: -Omitting proofing the yeast in water/sweetener. You can cut 10-minutes off right there. You can add the yeast directly to a portion of the dry ingredients. (Don't forget you need the liquid to be warmer than when you proof yeast in water). The water cools quickly when it's added to a bulk amount of dry ingredients, so the warmer temperature is necessary to activate the yeast because it cools during the mixing. Side note... Because yeast has developed over the years, you can also add active dry yeast directly to the dry ingredients, you'll find many recipes that do so. You don't ALWAYS have to proof the yeast first. It's just another option in the world of bread-making. Just remember the temperature of the liquid will need to be higher (125-130-degrees F) than when you proof the yeast in water (100-110-degrees F). -Using a fast-rising yeast you can also omit the first rise. After kneading, you cover the dough and allow it to rest for 10-minutes before forming the dough. After your dough is formed, you allow it to proof to "double" as usual. If you happen to have a Zojirushi Bread Machine, you'll notice in the recipes in the user's manual they suggest one amount of yeast if you use Active Dry Yeast, and another (smaller) amount if you use a Fast-Rising Yeast, when you use the regular cycle. The same information is included in Beth Hensperger's book, "The Bread Lover's Bread Machine Cookbook". As the others have shared, a fast-rise is a destination to get bread done quicker, but not necessarily BETTER bread. I have an old recipe for 30-Minute Hamburger Buns and they literally take only 30-minutes from start to baked burger buns. It's enormous amount of yeast in ratio to the amount of flour (6-tablespoons to 10-1/2 cups whole wheat flour = 4 dozen hamburger buns) is what makes it work in 30-minutes. While I've used this recipe when time was an issue, I wouldn't have put the finished product in the County Fair because they just wouldn't stand up to Judging Standards. But the recipe works well for a huge bunch of teenagers over for Sloppy Joes on the spur of the moment. Heck, they'll eat ANYTHING!!!(LOL) For bread in a bread machine that is made on the Quick Cycle in one hour, you MUST use the fast-rising yeast (SAF-Instant, Quick-Rise, Rapid-Rise, or Bread Machine Yeast - which are all fast-rising yeast products), in order to get a loaf in 1-hour. Active Dry Yeast won't work properly on the Quick Cycle. If you ever need to test your yeast (especially if you buy in bulk and don't use it all that often): Use a 1-cup glass measuring cup. Fill it to the 1/4-cup line with warm water and add 1 t. sugar and 1-1/2 t. yeast. Wait 10-minutes. If your yeast is active it should be up to the 1/2-cup line. And always remember... Your bread dough rises according to the strength of the yeast, ambient temperature, and moisture --- NOT according to a clock. The bread dough that rises in 25-minutes in the summer in my kitchen can take 45-minutes in a cold winter kitchen. -Grainlady

I buy the double package too like Ruthie G and I just keep mine in the refrigerator, in a canister that the light can't get to very well. I looked at my last package I am using and it expired October of last year. Still going strong. I have a big batch (9 cups flour) of refrigerator rolls in the refrigerator that I made this week. I will probably use some of it tomorrow. I am not sure how you can test a small package and use it in your bread machine, if you put your liquids in first and the yeast on top. I have never put the water and yeast together in a bread machine and made bread that way. Has anyone else ever done that? Sue