Saving tomato seeds is simply putting the seed sacs from the tomato into a small jar with a table spoon or two of water and let them ferment for a few days then rinse them off and dry them. All my tomatoes now are heirloom.
That’s what I did.
I hope they breed true. Time will tell.
On the off chance that they don’t work, I ordered some new seeds anyway and will be planting those in a couple weeks and see how they do compared to each other.
I want to share a little method for tomato seeds that Red Devil posted a few years back.
Use liquid oxy clean to spray on your tomato seeds. Let them soak for about 30 minutes. Rinse off and let dry. No need for waiting and having stinky fermented seeds.