Cut up the onion and tomatos. Combine all in bowl and refrigerate for 2 plus hours. DIRECTIONS. Cut the cucumbers in half and then slice into bite size pieces. Place all vegetables in large bowl. Chef John's salad is a great summer side dish and pairs perfectly with grilled meat or seafood. Cover and refrigerate for several hours before serving. Can be kept in the refrigerator for several days. Smashed cucumbers release different flavor compounds. Pour entire bottle of dressing over, stir.