Recently, I have been making Jam. Not quite on the scale depicted above (which is of a Mrs Gus Wright of Greene County, Georgia, circa 1941:
http://www.flickr.com/photos/nypl/3110584464/), but I'm happy with the results none the less.
Specifically I've been making Strawberry Jam. I made a couple of batches last year and they went down very well with everyone who tried them, so I felt it only right to make use of this years crop. It must be a decent crop too, as I managed to snap up a box of 2nd class fruit from the Mount Gravatt markets last weekend for a mere $5. That gave me just on 2kg of fruit once I'd rejected the duds, and at that price how could you not!
I ran into a problem pretty quickly after preping the fruit though, in that I couldn't find last year's recipes. After a half hour of hunting I gave up and decided that I'd wing it (with the aid of various other recipes I'd ofund whilst on the hunt). I'm pleased to say this worked out very well, proving that jam is not at all hard to make. If you're thinking about it my advise is just buy the fruit and sugar and get stuck in! Here is my bastardised recipe to help you.
For 6 jars Strawberry Jam:
2kg strawberrys, washed and sliced
1.8kg sugar (half raw, half caster)
400ml(ish) fresh lime juice
Knob of butter
Lot of jars
1. Place the strawberrys in 2 baking trays to a depth of about 4cm. (Should be 1kg in each tray).
2. Cover strawberrys in each tray with equal amounts of raw and caster sugar (so 900g in each if using 2 trays).
3. Leave in fridge for anywhere between 3 hours and 2 days (mine were in for 2 days).
4. Pour resulting fruit/syrup/half melted sugar mixture into a large pan/s (I used 2 3-litre stockpots).*
5. Add in the lime juice and butter (the butter stops the jam catching during cooking, and gives it a nice shine when cooked).
6. Bring the mixture to the boil slowly, stirring constantly (this will take a while, and you need to stir it or the sugar will catch and burn).
7. Once the mixture has started to boil turn up the heat and boil rapidly for around 20 minutes.**
8. Once boiled for long enough, turn of the heat completely and let the jam cool for 10 minutes.
9. Transfer to sterilised jars, seal, and leave to cool overnight at room tempurature.***
* The trick here is to leave plenty of room in the pan for the mixture to rise up the pan when cooking (no more than half full before cooking).
** The time for boiling is really the art for jam making, and it's all about setting point. The jam needs to reach a certain tempurature in order for it to set when cold. Technically this is 104.something degrees centigrade. My thermometer tops at 100, so I don't know if I reach the magic temp for sure, but I find 20-25 minutes boiling results in a nice, but not overly firm consistency).
*** I sterilise my jars by running them through a long hot cycle in the dishwasher - easy :)