I want to make lemon jam tarts, not curd, jam. That thick, gelatinous, way too sweet yellow lemon jam.

So, I have scoured the internet and found a few suggestions but there is nothing thermomix.
I have tried to convert but it seems to have failed miserably so i am probably about to give up.

But, on the off chance anyone, or anyone nan / great aunt / cousin of old might have a 'tried and true' lemon jam recipe so I can make some darn lemon jam tarts!!

I found a youtube video for tarts with the right jam but no jam recipe. I can find lemon curd recipes. I find the odd lemon jam recipe but doesn't make enough sense for me to convert but I just wanna make lemon jam tarts for my dear mum.

Can anyone help? Please, maybe someone own/works/makes in a bakery LOL!!!!!!