Wash the strawberries, blueberries and spinach thoroughly.
Slice the strawberries in half lengthwise and transfer them into a bowl.
Add the spinach and mix well with strawberries.
Finally add the blueberries to the same bowl.
In another small bowl, whisk together the salad dressing ingredients - olive oil, balsamic vinegar and salt.
Add the salad dressing to the salad and mix the contents so the dressing will coat well in the fruits and greens. Transfer the salad to a salad bowl and serve with breakfast, lunch, dinner or snack as you like.