When purchasing your tomatoes and peaches from the market, see if you can buy organic produce, where the peaches and tomatoes are less likely to contain pesticides.
Clean and sanitize a glass jar.
Combine the 200 grams of room temperature water with the Kosher salt.
Stir until the Kosher salt is dissolved, and set the salt water brine aside for later.
Add the fresh mint and basil leaves to your clean fermentation jar, along with 1 tsp of coriander seeds.
Add the sliced peaches and chunks of tomato.
Press down gently on the tomatoes and peaches, and then pour the salt water brine until the contents are completely submerged.
Place a glass or ceramic weight on top, to keep the fruits and vegetables submerged below the surface of the salt water brine during the next three days as they ferment.
Secure the contents with a lid, and open up the fermentation jar every day, as gas will escape from the fruit and need to be released from the jar periodically during the fermentation process.
Note at this stage that your ideal fermentation environment should be dark with a steady temperature of roughly 65˚-70˚F.
Every day, open the jar to release the built-up CO2, and to check on the progress of your fermentation.
After three days of fermentation, drain the tomatoes and fermented peaches from the brine, and divide into 4 small bowls.
Top each bowl with some of the ripe unfermented peach slices, Feta cheese, and some pine nuts.
Drizzle some Extra Virgin Olive oil and with some sherry vinegar on top.