Tomatoes cut into eighths.Cucumber - half rings. Onion cut into halves, then cut into very thin half-rings. Onions folded into a colander and scald. let the water drain off. Fold in the salad bowl cucumbers, tomatoes and onions, season with salt and pepper. Grenades to break up and add to the tomatoes grain. Pour in a bowl the vegetable oil, mix well. The salad can be serve immediately to the table.