So, does anyone harvest seeds from supermarket plants and grow them sometimes? I've got Kumato seedlings now. I'd put the seeds I harvested at about 80% viability.
Just fyi, Kumato is owned (and strictly licensed) by Syngenta, and the seed isn't available to the home market. BUUUT, if you take the seeds out from a ripe Kumato tomato, there isn't anything stopping you from growing Kumato F2 tomatoes. And so on.
I'm going to try Bell peppers next (full of easy to harvest seed) and maybe some hot peppers from an asian market, for variety's sake. The easiest to both harvest and grow, as far as I'm concerned, are citrus fruits. They just take time. Although I forgot to label mine, so in a few years, when they finally fruit, I'll finally know what's what.