Right let us say for instance Mrs (Insert stereotypical Indian name) sells 25 large portions of curry a week for £5/portion, over a year that would net her £6500. Not bad for fantastic curries and you can even choose what you would like.
Isn‘t that how Pataks started?
That Levi Roots bugger as well if I remember correctly, flogging homemade sauce at ‘carnival’
(edit, though obviously in both cases there are ‘cultural sensitivities’ that would inevitably prevent prosecution, whereas I have no doubt at all that the local trading standards would be positively wetting themselves over the chance of dragging old Mrs jenkins through the courts for a successful prosecution over the five jars of homemade tomato chutney she donated to the church raffle...