1. In a large bowl, toss together the radishes, peas, ricotta and mint.
2. Using a knife or a mortar and pestle, make a paste of the garlic and salt. Place in a small bowl and add the lemon juice and balsamic vinegar and stir well to combine. Drizzle in the olive oil, stirring constantly, and add pepper to taste.
3. Pour dressing over salad and toss well to combine. Taste and add more salt and pepper if necessary.