I always cook my waffles following Nigella's recipe and they always come out well, however they are a bit too hard. Is this because I cooked them for too long?
Nigella's recipe for Waffles (from AT MY TABLE) was created for her stove-top waffle iron. The waffle iron makes fairly deep Belgian-style waffles and the cooking time stated in the recipe gives waffles that should be crisp on the outside, with slightly fluffy centres, if using this type of waffle iron.
Unfortunately all waffle makers are different, so the recipe suggests following the cooking instructions that come with the waffle maker or waffle iron. If yours has plates that are not as deep then it could be that the batter is cooking though more quickly and the timings need to be reduced slightly. If you need a slightly shorter cooking time for your waffle maker but find that the waffles look a little too pale then you could increase the sugar by 1 tablespoon, as this will help the outside of the waffles to brown more quickly, but we would not increase the sugar too much as it will make the waffles too sweet.