Yeast can be stored in the freezer to last longer. Someone asked me once, how long, but I couldn’t remember.
So I ran across my notes earlier this week and the answer is 5 years. So I would advise vacuum packing in freezer bags, if you have the food saver or some other method for doing this.
I would also pack it in smaller packets, depending on how often you will bake with it.
Additionally, you can make bread with less yeast, if you are willing to let it rise overnight or longer. I ran across a recipe that used this trick when searching for no-knead bread, but I don’t have the book mark anymore.
Additionally, Quick breads using baking powder are faster. Baking powder will eventually loose its oomph, but if you stock baking soda and cream of tarter—they will last almost indefinitely and when combined they are baking powder substitutes.
Also for baking cakes etc. unflavored gelatin can be used to replace eggs.
I store my baking powder in the freezer as well.
Thanks, good to know.