public String getHealthiestSalad() {
        int calories = Integer.MAX_VALUE;
        String healthiestSalad = "";
        for (Map.Entry<String, Salad> salad : data.entrySet()) {
            if (calories > salad.getValue().getTotalCalories()) {
                calories = salad.getValue().getTotalCalories();
                healthiestSalad = salad.getKey();
            }
        }
        return healthiestSalad;
    }