Water Bath Method of preserving - advice on jars

[Alison]

Marmalade will store happily without any extra treatment due to the sugar content. However, I grow extra tomatoes to store the surplus. I don't want to buy another freezer so I make pasatta and store in pasteurised jars, water bath would also work but you need a decent seal and good glass to take the pressure. The IKEA jars don't seal very well and certainly don't take a vacuum. If I just stored in the fridge a) I'd need another fridge and b) gave a very big risk of botulism as there is no preservative (like the sugar in your marmalade that you're only storing short term anyway) in my jars which I store for up to a year.