Tomatoes for next year

B3

Self-seeded tomatoes have done well for me for the last couple of years. Sometimes better than bought seeds.
Should I come across a supermarket one that I like the taste of, what should I do to get viable seeds?
I'm aware that they might not come true but I'll give them a go anyway.

Obelixx

Remove the seeds from your chosen tomato and put them and their surrounding jelly  substance in a glass and add water.   Stir well and leave a few days while the seeds separate from the jelly as it liquefies.   Strain, rinse well to remove any remaining jelly and then dry on a piece of kitchen paper.

Store or sow depending on time of year but do remember that with shop bought commercial tomatoes they will often be F1 varieties and who know what you'll get from their progeny?   Better to save seeds from known heritage toms.   

B3

Thanks @Obelixx😊
Now I know what to do,I'll give it a go. The selfies tasted better than those from bought seeds this year - who know what I'll get😊

Obelixx

We have had self sown Yellow Pear for the last 2 seasons which is just as well as the March fair where I buy my heritage toms was cancelled this year, along with all other plant fairs.  They didn't taste as good this year tho and there were huge variations in the sizes of the tomatoes but they were fine for cooking down for making my passata. 

Some cherry toms self sowed too and were good but I removed all the other self sown plants that germinated as, by then, I'd found seedlings in local plant shops which were allowed to open for the sale of food plants and needed the space for them.  Not impressed with modern F1s that I bought but I have ordered seed just in case.

It may take a few days for the jelly to separate and you may get a scummy skin so cover the jar with some paper towel so it can breathe but not send out spores or smells.