Came across this video when I got curious and searched up how they do it.
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Slightly misleading title because it doesn’t actually show how the seeds are separated.
Basically, they got into a machine as fruit and they come out as seeds… also several steps of rinsing and cleaning…
Can suggest speeding up the video (a lot)
Also just realised that speeding to more than x3 is now a paid feature at YouTube

There is one more step, they are put on a vibrating mesh which has holes big enough for the seeds but not the pulp.
Honestly, it could have been a gif




