Jam jars

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Jam jars in two sizes. One holds 230ml and has a diameter of 66mm and the larger holds 440ml with a diameter of 82mm. Both have straight sides - no tapering at the neck of the jar either. According to the BBC website this is how you sterilise jam jars: Wash your jars and the lids in hot soapy water, but do not dry them. And importantly, this just in: "As a WI jam maker, please may I ask you to add the instruction to rinse jars and lids in clean water before sterilising them." Now leave them to stand upside down on a roasting tray while they're still wet. Pop the tray of clean, wet jars and lids in to a preheated oven at 160-180ºC for about 15 mins. If you need some really small jars, try these. Show more