I have grown some Tumbling Toms this year and it is the first time I have grown tomatoes.
The skins on some have been a little thick and chewy (an unpleasant surprise). The two I picked as samples a little while back were sweet and thin skinned.
Having looked for answers on Yahoo, here and a few gardening sites (including 'allottmentsforall') I am unsure as to what it the cause of this.
Various suggestions on the web: Hot weather, feeding and type of tomato.
I would be grateful if anyone could offer an answer or advice.
Thanks very much
Lorien