I have made sauerkraut and didn't like it...and kimchee is fucking horrible but I am happy to pickle, bottle, jam or brine things...decent Kilner jars are always worth keeping an eye open for and even buying new are worth getting. For jam, brining and pickling, the lid and seal system of Kilners is not so crucial - I use any old jars for jam and chutney and just top with waxed papers, but ketchup, which has to be sterilised, can only be done in rubber sealed jars or bottles.