Figure I’ll make a new thread for this so I don’t pollute the xmas swap one. I’m looking for small bottles which can be conditioned in. A couple of things popped up on the net:
187ml clear glass champagne bottles (e.g. 187 ml Clear Champagne Wine Bottles, 24 Per Case). The shipping is gonna be murder. Amazon has them too but it’s over $2 a piece, which probably works out to the same thing.
Are 330-355ml too big for your batch sizes? I’d be open to getting a couple of cases of stubby bottles. Not appropriate for high carbonated styles, but good for most everything else.
Maybe Mout can hook us up?
Those are still kinda big, I usually manage to get around 8.5-9.5L packaged so that would only leave me with a couple of bottles for myself. I’m leaning towards those small soda bottles - Coke’s website says they even make smaller 250ml ones so I’ve contacted them to see how I can get my hands on some.
If you can’t find smaller bottles, you could always blend beers and call it an assemblage. Give you an opportunity to create something you couldn’t quite get otherwise.
Suggestions - biere de coupage, farmhouse with sour; aged biere with similar fresh beer with hop character. Blend 1:1 or experiment with a balance.
They look pretty thick to me. I can’t imagine they couldn’t hold pressure. In any case, the cap would release any extra pressure before the bottle breaking. When I first started brewing, I used swing top bottles exclusively and never had flat beer or an exploded bottle.
Each gravity point yields 1 g/l or 0.51 volumes CO2
So if you have a wort at 1.048 SG which ferments down to 1.010, you’ll end up with ~19 volumes of CO2, or 38g/l of CO2 (3.8 g in 100 ml).
Then 3.8 g of CO2 corresponds to 0.086 mol of CO2. Using the ideal gas law:
PV = nRT
P = nRT/V
where
n = 0.086 mol
R = 8314 (l Pa)/(K mol)
T = 293 K (20 °C)
V = 0.1 l
P = (0.086 mol x 8314 (l Pa)/(K mol) * 293 K) / 0.1 l
P = 2.1 x 10^6 Pa, or 2.1 MPa
So 0.1 ml of wort at 1.048 will generate 2.1 MPa of pressure once the fermentation will be finished (or ~300 psi).
I remember someone on FB trying sell small swingtop bottles that come from the dollar store. I used them for hot sauce and they can hold a little pressure but I wouldn’t trust the swingtop to hold enough pressure for a beer
I’ve used small glass CocaCola bottles before, 237 ml. They are still sold (Walmart has them) but I imagine they are not as popular so hard to find in the return bin. If you know a regular drinker they will probably cost less than 1$ a piece.
