I've never made jam before. OH got given 2kg of apricots yesterday and I would like to try to make some, it's his and DS' favourite.
Got a really simple recipe googled, looks lovely. However in the recipe it says "1kg apricots, halved and stoned", what does that mean? Do I halve and stone them, then weigh them up to 1kg? Or is that 1kg of apricots which I then half and stone? 
I ask because the recipe calls for 1kg caster sugar, so I'm guessing equal quantities of sugar and fruit, except if I stone the apricots after weighing I'll have less fruit than sugar.
Am I overthinking it?