Cut the chicken into 4 rations. Mix the vinegar, the garlic, the olive oil and the sugar and pour on the chicken. Leave to marinate for at least 4 hours in the fridge. Peel the kiwi and slice. Clean and cut the lettuce. Prepare in 4 dishes. Beat the ingredients for the sauce. Cook the chiken for about 6-8 minutes each side, depending on its size. Cut and put on the salad and pour the sauce on.