Toast the cumin (optional): In a dry pan over low heat, toast cumin for 30 seconds until fragrant. Let cool slightly.
Mix the dressing: Whisk together orange juice, lemon juice, olive oil, cumin, salt, and pepper in a small bowl.
Combine: Toss the shredded carrots in a mixing bowl with the dressing.
Finish: Add the chopped mint and any optional add-ins. Let sit for 10–15 minutes to absorb the flavours before serving.