Just a thought...
If you start substituting yeast and doing a partial mash, are you really "recreating" the recipe?
I would do it as written just to do it. You are out an hour and a few bucks but would be a great tribute to Grandpa. I have a shoebox full of my grandmother's hand written recipes. I have followed some of them to the letter just to see even though I know of better ways or ingriedents.
If I remember correctly, the Premier Malt comes with yeast and a recipe. I agree with tubercle, it's a tribute to your Grandfather and not about making the best beer. Follow that recipe or your Grandpa's. Besides, it might be fun to experience what many had to put up with during prohibition.
I agree. Do it as written. It will especially make you appreciate even more how far things have come for homebrewing.
Also...having tried this myself once...since you will (or should be) practicing a kind of sanitation that would have never occurred to your grandfather, you might be a bit surprised how drinkable the brew can turn out. I'm not saying you'll be making a world class beer with the recipe (far, far from it), but on the other hand, while the sugar ratio is going to thin things out quite a bit, the bread yeast was not really the culprit that made some prohibition homebrew cidery, nasty swill.
It's probably not something you'll ever want to make again, but it is a worthwhile experiment.
I really appreciate all the comments from everyone! After doing some thinking, I will try to make this as close to the original as possible. I know it may not turn out to be a good beer, but it would be nice to see what kind of beer my Grandpa was able to make. My dad and uncle keep asking me if I've made this yet, so I know they want to give it a try and relive some of their first beer memories too.
I bought Premier Malt from E.C. Kraus a few years ago and they still have it listed. It isn't available until May.
Sorry, I can't get links to work again.
I did find the malt at this site as well. Unfortunately, the site keeps changing their date.
I'm beginning to fear it won't be available again. I tried to contact Premier and they wouldn't respond to my email. So, if I cannot get the Premier Malt Extract, what would be the closest match? I'm thinking of some Coopers Extract perhaps? Never using the Premier myself, I'm at a loss. I'm hoping someone here may remember what it was like and can point me in the right direction.
One more thing I forgot to list; the beer was open fermented. I would assume that doing this will give it a different taste than if I did it in a carboy with airlock. Does anyone see a problem with doing the open fermentation and lightly covering it with a cloth?