HI - can you post the recipe, I'd love to see it!
Also, yeast kept in the freezer may be good for 10 years, I've used it after 3 with no problems. You can test it by proofing it with some sugar or honey in warm water. If it fizzes up, its alive. If nothing happens, try it again and make sure the water wasn't too hot. If it still doesn't work, throw out and replace, but most of the time it will still be working though it may rise a bit more slowly than new yeast.
expatriate Californian living in rural Ireland with husband, dogs, horses. garden and many, many cats