taste is very subjective. I didn't find Tigarella particularly flavoursome but my daughter loved them.
So you may not have done anything wrong. The weather was very changeable and that may have been partly to 'blame'.

Thanks for the comment, I shall try again this year, but I will get my Tigarella seeds from a different supplier, I have always found them to have a nice tangy taste previously. I suppose it could be my taste buds you never know.

I've read that some popular varieties have lost their taste over the years, no doubt inadvertently by breeders.
Gardeners' Delight was one mentioned and was now being re- selected

Maybe Tigerella is a casualty? I never found Tigerella to my liking, but as SBG says, taste is so subjective

My current favourite is Bloody Butcher but I keep trying others just in case one is superb

and with the year we have had it could have been a symptom of covid. My taste is almost 100% back to normal but coffee still is odd and some spices less zingy.

But as Grandad gar. said the breeding may have been a problem.

I suspect that Grandad Gar may well be right, my taste with other items is fine, by the way I have tried growing Bloody butcher a couple of times but never really did well with them. The best ones I ever had was and outdoor variety called Orkado, but I haven't got a lot of space outdoors, so don't normally grow them. Anyway I shall persevere with Tigerella.

Thank you for the advice.