don’t like black tea and coffee – can I have low-calorie squashes?
Not on the Sole Source programme. Research has shown that citric acid can prevent the body utilising its carbohydrate stores and cause fluid retention. As citric acid is present in ‘one calorie’ diet drinks, low-calorie fruit squashes, slices of lemon and lemon tea, any of these may for some people negate the effectiveness of the Diet. Cambridge have a small range of drink flavourings which can be used in moderation.
It is possible to whiten tea and coffee using small amounts of vanilla flavoured Diet from the daily quota. Leaf herb teas (mint, nettle, etc) can add variety, but avoid fruit and flower teas as they contain small amounts of carbohydrate which can cause fluid retention and induce a plateau in some dieters. Those who cannot live without the daily enjoyment of tea and coffee with milk can still lose weight with Cambridge by following one of the "with food" programmes (see Chapter 2) for which there is a daily milk allowance
Source: Cambridge Diet.
The zero calore drink is calorie free so the odd one is fine I believe.