Tomato Avocado Salad with a Lemon Vinaigrette (Edit recipe)

This tomato avocado salad is a summer plate that needs nothing cooked: cherry and sungold tomatoes halved the long way, cubed avocado and fresh mozzarella pearls. The dressing is a true lemon vinaigrette — equal parts extra-virgin olive oil and lemon juice, which is far more lemon than most recipes call for, whisked until it turns milky yellow. That colour change is how you know it has emulsified; before it does, the oil and juice just slide off the tomatoes.