Ask Lemmy

Check if it's mouldy or smells funny and you should be fine. This is not health advice nor flavour advice, I drink 3 day old coffee left in the pot in the summer.

If its black with no creamer added it should make it a week easily, although this partially depends on how long it was left sitting out before being placed in the fridge.

If it has milk/sugar/cream already in it and was left out all day I don't think I would save it personally.

If its black and was left out all day I would allow for ~7 days in the fridge, but would be looking it over carefully each day before drinking.

You can always freeze a portion of it. It should stay good for years frozen although it will lose flavor overtime. In the fridge I would say no longer than a week YMMV.

Hmm at some point mold is likely to form, and you won't be able to see it. Unfortunately I don't know how long that timeline is. With basic food safety training my best guess is that it's safe for 3-7 days, and personally I'd trust it for 2-3 weeks as long as it's now constantly refrigerated

No amount of time. Not in that it'll spoil, just in that it'll taste gross reheated.

I think you should test a sample from the carton 3 times a day and record your results.

Then share your data back with the rest of us and we as a group will finally have an answer! You will have added value to the world and there will be much rejoicing.

it won't taste good, but it won't be bad for a week, assuming it's kept cold and not at room temp for prolonged period.

after that it will get nasty.

It’s water soaked in beans. It’s not worth keeping.

Maybe you should crosspost the question to !coffee@lemmy.world

They yankee heritage food way of dealing with leftover coffee prior to the love affair with iced coffee was to use coffee in place of water in making a coffee gelatin dessert, coffee jello if we use a brand name.

If you aren't one of those who try to taste subtle hints of berry, chicory and dock in your coffee and just enjoy it, boil it if possible assuming it's black to psudo-pasteurize it, let it cool again a bit, keep it sealed in the fridge the best you can.

Cold brew stays good for about a week for me, brewed coffee has gone a few weeks when I took two of those Starbucks cartons home from a event.

Pike place still kicks when reboiled.

If you are just worried about potable, quite a long time. We make a pot every day, but some days we don't really get to it and there is half a pot remaining. We'll just drink the rest the next day.

Refrigerated, it will miss likely last a couple weeks. If it has sugar or milk in it, it will be much less. Also, if the container has been drank from directly.

I'm missing some context here surely.

Coffee is good for roughly 45 minutes after it's brewed or few hours in an air-tight thermos. Ideally it should be consumed immediately.

I cold brew coffee for 2-3 days on my kitchen counter and then store the resulting pitcher in the fridge for a couple of weeks. I don't have a lot of experience with iced coffee, but I would be surprised if there was a significant difference in how well it keeps.

Forever, next question please

If you have ice cube trays, I'd freeze it into coffee cubes and keep them in a freezer bag. It'll taste way better for longer and there's much less risk of mold or funky smells developing.

I have some from Easter that I'm still using and they're still quite strong. I toss a few in a glass when I wake up with some milk and let it thaw for a bit, I'm a fan.

What does it have in it? If its plain coffee, no milk etc, you could freeze it in ice blocks. Reheat it in the microwave to revive, as you need, or mix in iced coffee. The water has been boiled to be used, so theres going to be less bacteria in the water. So it should sit for a bit without going too bad. Personally I'd freeze whatever you can't use within 3 days, to be safe.

Silly youngen! Coffee doesn't go in the fridge! It goes in your mouth before it gets cold!