Would you mind sharing the recipe you mentioned for a raspberry cider using safale-05?
I dont really have recipes. Its really more of a process with a few variable steps for different ciders (one of which is adding fruit like raspberries). Since I get a lot of questions about this, I thought it might be helpful to pull together some of the process info that is scattered around this thread:
The overall process is for semi dry to sweet ciders in the 1.004 to 1.020 range, and consists of a few basic steps:
- Sourcing good (preferably low nutrient) juice
- (optional) Add other fermentables and/or sulfite
- Pitch a yeast that works for the style you want and crashes reliably
- Ferment the cider in a cool place, tasting to determine point to stop
- (optional) Add fruit or any secondary flavoring right before the crash
- Cold crash the cider at desired residual sweetness
- (optional) Room temp bulk storage, for clearing and to insure ferment stopped
- Force carbonation and serving from keg
- (optional) Bottling from kegs as needed
Sourcing the juice
Just like any other brewing endeavor, start with the best ingredients you can find/afford. See the post on juice a page or two back for further details. For most folks, your time is going to be the biggest investment, and IMHO its not worth the effort if its not going to be better than a commerical hard cider - so look for a good taste/cost ratio and dont just shop for juice on cost. Keep in mind that using low nutrient juice is key for successful cold crashing, so try to find an orchard that doesn’t use a lot of fertilizer on their trees (ie one that is growing for taste vs weight/volume)
Adding fermentables and sulfite
For the yeasts I use, cold crashing seems to be more reliable if the starting SG is at least 1.060 and preferably 1.065. For the first few pressings of the season, the apples don’t yet have so much sugar, so I will add some sugar to raise the sg to 1.065, with 2/3 tubinado, 1/3 dextrose mix. This mix leaves the closest to an apple taste IMHO, but if you don’t have that on hand table sugar works OK. Honey also works well, as does straight turbinado, brown sugar, etc., all of which leave more of their own tastes.
I use new bags of sugar when I add it – because I just add it right into the carboys and roll the carboys around until its all mixed. One of the handy things about better bottles is that after adding sugar or honey, you can just jam a rubber stopper real hard into the top so that it wont come out, and roll the carboy(s) on the floor with a stick for a few minutes.
After adding and stirring in fermentables, I’ll add sulfite to any batches as needed. If the batch is planned for long term storage, I’ll add sulfite. Also for WLP005 and Wy3068, I’ll always add sulfite. If the juice is tart, I use 1/8 tsp in just under 6 gal. For less tart juice, I use1/6 tsp.
All of the carboys in the pic above have had sugar added. The two carboys in front also had 1/6 tsp of k-meta added, which makes the juice lighter in color. Other than fermentables and sulfite, I don’t add anything. I’ve tried pectic enzyme and anti-foamer, but haven’t seen any benefit from it.
Pitching yeast
I usually take the yeast out of the fridge a few hours before I’m planning to pitch, let the Wyeast and White Labs warm up a bit before I smack/shake them for the first time and then pitch everything together when the Wyeast packs are swollen (2-3hrs later).
For dry yeast, I just sprinkle just enough yeast on the surface of the cider so that it spreads out in a film across the top. Usually that’s about 1/3 to ½ of the pack at a time. When the first round of yeast sinks, pitch a bit more, then a bit more until the packet is done. That makes sure that the yeast get a nice even rehydration. I don’t recommend making a starter first, but if you do, use the juice, the yeast will work better if they rehydrate in the same environment where they are going to live for a while.
Before adding sugar, I’ll pour out enough juice from each carboy to make the appropriate headspace for the yeast. Ale yeasts generally need about 1 to 1.5 quarts of headspace. Wheat yeasts need about 2 to 2.5 quarts.
Dry ale yeast should produce visable airlock activity within about 8 hours. With the Wyeast yeasts, it’s a little more varied. If it’s a fresh pack and swells quickly after smacking, there will usually be airlock activity in 8-12 hours. Worst case, it could be 24 hours. The White Labs vials seem to take the longest. A fresh vial, warmed up to room temp and shaken a few times before pitching, will generally take 18 to 36 hours to start producing airlock activity.
Fermenting
A long cool fermentation works well for a semi sweet to sweet cider. For the juice and yeasts I use, a steady temp of about 60 is ideal. That results in ~3wks to get to 1.010 or so, depending on the yeast. Early in the season, my average temps are usually 65, which ferments a lot faster and makes it harder to crash. Late season temps can go to average 55 degrees for 4-5 wk fermentation times.
Most ale yeasts don’t kick up a lot of krausen and you can use a simple airlock without needing a lot of headspace. Wheat yeasts and batches with honey added tend to kick up a lot more krausen, in which case its better to start the ferment with a blowoff tube for at least the first week or so, until the krausen dies down. Its good to use a fairly tall bottle for the blowoff bubbler – so that it builds more air pressure in the carboy and keeps krausen down. You may need to change the water in the blowoff bottle a few times to keep foam from appearing in the blowoff bottle and keep fruit flies away.
If you are fortunate enough to have scored some ‘brew balls’ before the company that made them stopped selling them, these work great for monitoring a ferment. They tend to hang out by the side of the carboy, so are easy to spot. For a cider with target of 1.010, I’ll generally use a 1.018 and a 1.012 ball. The time between the first and 2nd ball dropping tells me how fast the ferment is going. After the 2nd ball drops, I’ll have a taste, see how the balance is and decide how much longer to let it go (if at all) before stopping.
If you don’t have something like the brew balls, then you’ll just need to take some samples to see how the fermentation is progressing. As a rule of thumb, you’ll want to do this shortly after the main fermentation has peaked and is starting to slow down. See the section on yeast a few posts back for typical times for various yeasts given various ambient temps. A hydrometer is handy for getting repeatable results, but your tastebuds are the final arbiter of where to stop.
When the cider is still fermenting, it will usually taste a little drier and more alcoholic than it will after the crash, when the yeast is gone. So if you are going by taste, its good to let the cider go just a little bit further than what tastes like the ideal balance, as the crash will generally increase the perception of sweetness.
Late ferment additions
A good time to add fruit like raspberries, blackberries, etc, is right before crashing. That way the flavor doesn’t get lost during the primary fermentation and you will get all of the pulp and seeds out during the crash. Depending on how fast the cider is fermenting, I will generally add fruit a day or two before crashing. For fresh picked berries, I use about a pound for 5 gal of cider, a pound and a half of store berries. If you add the fruit when the SG is about where you want it, then adding fruit will generally bump the sg by a few points and you will have another day or two for the sg to drop back to the target. Be careful when adding fruit or any sort of fermentables to an active ferment, because the fermenting cider will want to foam. Have a solid stopper handy, add a little bit of fruit at a time, and if it starts to foam, slap the solid stopper on, to keep everything in the carboy.
Cold crashing
To cold crash:
1) rack the juice from the primary fermenter into a clean vessel. This removes most of the yeast and nutrient from the juice.
2) Put a stopper in the newly filled vessel and put it in the fridge for 2 to 5 days, at as close to freezing temperature as possible. This causes remaining yeast and nutrient to drop out of suspension
3) Rack the juice a second time, into a clean vessel, making sure not to pick up any of the yeast from the bottom. By this time there should be a neglible amount of yeast and nutrient in the juice. If you start with 5.5 gallons of cider and leave a quart behind on each rack, you should be able to top off a 5 gallon carboy, with very little head space. You can save the trub that you leave behind and let it settle in a gallon jug to recover most of the cider.
4) Let the cider come up to room temperature and clear for a few more weeks. If the fermentation starts back up, refrigerate and then rack the juice again.
If you cold crash successfully, you can store the cider indefinitely at room temperature afterwards. However cold crashing successfully is not easy to pull off the first time. You need to start with low nutrient juice - ie old standard trees that havent been fertilized in a while, or juice from an organic orchard. You need to use a strain of yeast that flocs at low temps, be careful when you rack, and keep an eye on the carboy after you rack in case it starts back up.
Sometimes, if the apples have a high pectin content, the juice wont clear well during the crash, and this can make the yeast difficult to precipitate out. If the yeast refuses to drop out of suspension, and the fermentation starts back up after more than 2 crashes, the easiest way to handle this is usually to simply keg the cider, force carbonate it and keep it cold until consumed.
Kegging and Force carbonation
If you cold crash successfully, there will be no viable yeast left in the juice after the crash to carbonate the cider, so you must force carbonate. The easiest way to do this is to keg the cider, and give it 25psi of CO2 for a couple of days.
I think that covers the basics. If you are looking for details, you can just search this thread, where most of these steps have been covered in detail in one place or another. Cheers!