The main difference between Huel Black Edition and v3 is the macro split and the difference in sweetener.
Black Edition is a nutritionally complete lower carbohydrate, high protein meal. Unlike v3, it doesn’t contain any oats, making it naturally gluten-free. It also has 50% fewer carbs and 33% more protein than v3 Powder.
Where v3 Powder uses sucralose as a sweetener, Black Edition contains Organic coconut sugar and stevia for natural sweetness, providing an option to have a flavoured powder with no artificial sweeteners. It also contains green tea extract, a source of antioxidants.
Nutritional values:
In a 400kcal serving, Huel Black Edition contains:
Carbs: 17g (vs 38g in Powder v3)
Fat: 18g (vs 13,2g in Powder v3)
Protein: 40g (vs 20g in Powder v3)
Fibre: 6.6g (vs 7,8g in Powder v3)
You can also read more about the formula of Black Edition here and v3 here.