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Measuring jam jars
Thu 14-Feb-13
1:36 pm
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mauramac
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I could be about to make myself look daft but here goes ponder

Is there an easy way to work out the size of jam jars whistle

Reason I ask is I get quite a few empty ones given to me which have been washed and labels removed and a lot are unidentifiable so I can't find out how much they hold. I have noticed that when selling my jams etc people look at the jars to see which they think hold more as generally I sell them priced small, medium, large & very large. I don't want to diddle anyone but quite a lot of the smaller ones are in fact 8oz jars but don't look it.

I have tried weighing the jars once the fruit is in them but that doesn't work what_the_heck so I am left wondering if it might be worth not using these ones and just use the easily identifiable ones in future.

Before I consign them to back of cupboard I thought I would pose the question on here and hope there is a much cleverer person than me that can solve this problem smile

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Thu 14-Feb-13
2:57 pm
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Xahha
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You could try filling them with plain water first, pour in to a measuring jug and see what the volume is compared to a "standard" jam jar and convert- e.g say the 1lb jar hols 500 ml, and your smaller jar holds 250 ml, then it  should contain 1/2 lb compared to the other. The best way would be to weigh them before and after filling to give you your answer-  takes just a few moments, and you will know how much is in there.

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Thu 14-Feb-13
3:28 pm
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mauramac
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Right - thanks for that Martin. I'm going to print those instructions on to the front of my jam diary now so I don't forget. Thats really helpful, I am grateful.

Have just had an order for 19 jars of my jam/jelly/chutney which is about 1/4 of my stock so must get cracking on some more as have a couple of table sales coming up soon. I have rowan berries and rose hips in freezer to use up and my daughter has just bought me some quinces from Borough Market in London for a fiver. Now I can sort out my jars and get organised....brilliant ok

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Fri 15-Feb-13
11:11 am
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Terrier
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That's a good idea Martin, another way is to fill the jars with water and pour into a measuring jug, metric wise, if its 125ml, that's roughly 125g in weight , 250ml is 250g etc. I may be showing my ignorance here, but only recently found this out when a friend told me this. It's not perfect, for example something you would class as lighter than general, for example flour, or cocoa powder wouldn't work, or the other extreme neither would something really heavy but its a good general rule of thumb.
Great idea for when a recipe asks for 300ml of golden syrup or such.

Fri 15-Feb-13
12:14 pm
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mauramac
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Well I did try it and it was a bit more confusing than I expected - but that might just be me embarassed

I had no idea either how to work this out Jan.

I found the jar I thought was an 8oz size measured under the 200ml mark and I thought it should have been around the 250ml.

I will try it again later with some more of my jars and hopefully will get the hang of it.

Hoping to make some rose hip jelly today using my steamer to extract the juice and will need some of the smaller jars for this batch.

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Fri 15-Feb-13
1:57 pm
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Terrier
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Good luck Maura, my 'berrylicious' jam, looks good and tastes wonderful, just potted up 12 large jam jars.

Fri 15-Feb-13
2:40 pm
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mauramac
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Terrier said:

Good luck Maura, my 'berrylicious' jam, looks good and tastes wonderful, just potted up 12 large jam jars.

 

Ooooh "Berrylicious" sounds wonderful, I might just have to pinch that big_laugh

How much fruit did you use to get 12 'large' jam jars, and is that 1lb size jars devil

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Fri 15-Feb-13
4:54 pm
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Xahha
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Only water will weigh 125g for 125ml, so jam which is denser than water will weigh more for 125mls, so probably weighing is better than volume measurement.

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Sat 16-Feb-13
8:45 am
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Terrier
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I did say it was a rough measurement Martin, but that might explain the 200 ml issue in what you thought should hold 259ml, Maura..
im not sure exactly how much fruit i used Maura. The jam was a bit of a 'using up' session from the freezer and odd other jars of things I had left over.
There was about 1.5lb plums, 2 small punnets of blueberries, 1lb previously stewed apples, 2 half bags of frozen sweet cherries, a small bag of raspberries that had been crushed. I then added my last jar of crab apple jelly, my last jar of rosé and lavender jelly and 2 small jars of a nectarine and amaretto one that I made a few weeks ago that was a disaster. I had half a jar of homemade pectin in the fridge and added 3lb sugar. So a bit of a hotchpotch really, tastes gorgeous though and it's used up a load of odds and ends. Will photograph it once labelled and stick on my Pinterest site.

Sat 16-Feb-13
10:27 am
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brightspark
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Jan, is it possible to provide a linky to your Pinterest site? ......please .....  laugh

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Sat 16-Feb-13
10:32 am
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brightspark
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Terrier said:

Great idea for when a recipe asks for 300ml of golden syrup or such.

 

That's an interesting point there, Jan. Some recipes say '2 tablespoons syrup' - erm, how on earth can you tell how much extra goes in?  confused

If it actually has a weight required in the recipe, I put the whole jar/tin of syrup on the scales, and remove sufficient to satisfy the amount, but tablespoons are a bit different!  surprised

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Sat 16-Feb-13
12:02 pm
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mauramac
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Oh my goodness that sounds wonderful Jan - I so wish we lived closer I would be queueing up for a jar of that i_am_hungry

By strange coincidence I cleared out my freezer this morning as well but nothing so interesting in there. I found 2 large bags of sloes, 1 bag rowan berries and the 2 bags of rosehips I was originally looking for...oh and one very large carrier bag of lemon, orange, apple leftovers for making my favourite marmalade.

I recently made some Dumpsie Dearie jam with plums, pears and bramleys which is very nice. Richard eats loads of fruit and had bought some small blush plums which he was disappointed to discover were very sharp so I said thanks very much I'll have them and Dumpsie Dearie jam was soon in the pot - waste not want here as well wink

Wot's a pininterest site ponder

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Sat 16-Feb-13
12:44 pm
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brightspark
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Maura, it is 'pictures of interest' which can be 're-pinned' (or re-posted to point out to others) if people enjoy the picture or piece of craft, or whatever ....

Well, that's my explanation, anyway!!! laugh

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Sat 16-Feb-13
1:19 pm
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Toffeeapple
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brightspark said:

Jan, is it possible to provide a linky to your Pinterest site? ……please …..  laugh

LINKY

I'll try that again!

Sat 16-Feb-13
2:28 pm
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Xahha
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Hi, no critiscm implied with the volume aproximation, having worked in a laboratory environment and having to scale up products for larger manaufacture maybe in kilos rather than litres in the lab, I am used to being precise,- for example, glucose syrup has specific gravity (density) of roughly 1.3 times that of water, so 100mls, is roughly 130 grams in weight.

 

Jam should be about 1.35 density therefore 100ml weighs roughly 135g, and 200mls would be about 270g  (9.5 oz roughly)

 

I hope that helps the conversation.

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