I grew some kelvedon wonder last year,had one pod when tiny(and amazingly sweet) and decided to leave them to grow nice and big.When I harvested them a few weeks later they had lost their sweetness and needless to say I was gutted,I just composted them because I couldn't eat them.
This year,I have been growing the same variety and have eaten them all nice and small and sweet.The moral of the story;size isn't everything....flavour is!

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Spiderpig