Boil the buckwheat according to the instructions and cool.
Put the grits in a bowl.
Add tomatoes to the buckwheat (remove the seeds), cut into strips.
Wash the greens, dry them and cut them.
Fry the bacon until crisp or soft (as you like) and place it on paper towels.
Break the slightly cooled bacon (or cut it if it is soft) and add it to the salad.
Mix the parmesan and add it to the salad.
Season the salad to taste with salt and ground black pepper, season with lemon juice and oil. Mix the salad and serve immediately, otherwise the bacon will soften.