80 Litres! Wow, that's impressive!

How can you/is it possible to put things into jars to preserve (when it is still scalding hot) if the recipe says to store it in the fridge? I read a recipe the other day for tomato or chilli jam (was distracted at the time), and it said to put it in a jar, and keep in the fridge. Things with dairy I understand (like butterscotch or caramel sauces), but stuff like chilli jams/chutneys I thought were fine to store as a preserve in jars, in the cupboard, until opened, then into the fridge? Having said that, I do have LOTS of recipes waiting for me to try (really want to make some tomato and chilli chutneys, they are very popular in this little black duck's house) that call to be preserved in jars. Can you use any jars? (like pasta sauce jars), or is it best to get preserving jars?

Will definately be back later with some more recipes too. Think I will probably have to wait until the bug is asleep after lunch...