In a large salad bowl toss to combine the tomatoes, cucumbers, olives and herbs, and sprinkle with the 1 teaspoon salt.
In a small bowl, whisk together the yogurt, mustard, lemon juice and remainder of salt to thoroughly combine.
Serve the dressing alongside the tomato salad.
Notes
Heirlooms are classic varieties that are prized today because of their intense flavors, vibrant colors, and unique shapes. They're delicate, so they must be handpicked and packed.
When shopping for heirloom tomatoes, be sure to choose ones that are heavy for their size and store them on the counter at home –- not in the refrigerator.
Remember that heirlooms ripen quickly, so buy frequently and enjoy soon after purchase. Size and shape have no correlation with quality; large or small, they’re all delicious!