Can you make hard cider by pouring some yeast into a jug of store-bought cider and jamming a brewing airlock into the cap? IDK, let's find out!
Twelve hours after pitching the yeast, the cider has started to foam. I also poured some out, as several people pointed out I’ll need some headspace to prevent overflow.

OK, so two months later I bottled my cider in swing-top bottles, bottle-aged it for another couple of weeks, and I just had my first glass.

It’s…meh. There is nothing about it that is actively bad, but it's definitely not *good*.

Here's the challenge with homemade cider: it can either be sweet or carbonated, but not (easily) both. And this is *neither*, which is not a great combination.

When cider is done fermenting, the yeast has turned the sugars into alcohol. So it's no longer sweet. Also, the yeast has died off (because it ran out of sugar to eat or the alcohol got so high that the yeast can't live), so there are no longer any bubbles.

You can correct that by adding sugar just before you bottle it, if you kill off the yeast, which makes it sweet but not carbonated. Or you can add a bit of sugar before bottling, which will make it carbonated but not sweet.

I added a carefully measured bit of sugar to every bottle before bottling (too much and the bottle will explode), which somehow resulted in the cider being neither sweet nor carbonated. The bottle I opened was much improved through the addition of simple syrup, although of course it wasn't sparkling.

I've added a simple syrup to the other five bottles, and I hope to drink them at the perfect point when they're carbonated but still have sweetness.

@waldoj What about carbonating them after the fact? Seems like it would be easier to dial in a taste than a taste+bubble balance.
@donw I don't have the foggiest idea of how I'd do that.

@waldoj @donw Probably with one of those home carbonators thingies with the CO2 cartridge. I think you're only supposed to use them to make seltzer (lest something sugary backsplash into the mechanism) but obviously it's more fun to carbonate random things.

You can also drop a pellet of dry ice into a glass of the cider and wait until it has sublimated. (*Fully* sublimated, nothing skating around on the surface.) Never in a closed container. And then you can play with the rest of the dry ice.

@timmc @waldoj the cheap soda stream type things are for water only but the classic soda water bottle we saw in old Stooges shorts aren’t limited that way. Some frufru restaurants have used them to make foams out of all sorts of things. There’s some targeted at home brewers as well. https://a.co/d/2y8ptxE
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