Tomatoes are not cut into small pieces, put in a container with a lid.
Finely chop the Basil, send it to the tomatoes.
Pour in the soy sauce. Mix everything well and put it in the refrigerator for 15-20 minutes. During this time, the container with tomatoes is periodically shaken to evenly marinate the tomatoes.
That's it. For me, there is simply no more delicious salad.