Subtracting fibre carbs

Hi was wondering how do we count carbs in veg. I saw a video where the carbs were calculated by subtracting fibre from the total carbs is this correct for dafne

Apart from potatoes I wouldn't worry too much about carbs in veggies. One bright spark many years ago worked out that to eat 10 gms of carbohydrate in cabbage you would have to consume 32 lbs of the stuff. Most vegetables contain so little carbs that its hardly worth the worry. The Daphne handbook I have doesn't even list vegetables so there must be some truth in it.

Thanks that's great to know