Dressing tends to make lettuce limp, it is, therefore, advisable to mix the salad at the last possible moment before serving in order to keep the leaves crisp. Try to get a balance when adding the dressing; too much dressing will overwhelm the salad likewise, too little dressing will make the salad tasteless Make sure all your ingredients are free from excess water, as the excess water will prevent the dressing from adhering to your salad. It is best to use ripe but hard Tomatoes. Soft juicy tomatoes will get the salad wet. It's best to serve this salad cold!