One of the more common questions we get is about frozen foods. Can I use frozen meat, fish, vegetable or fruit? And how much should I have when it’s frozen?
First, yes you can use frozen foods, as long as they contain no additives, fats or sauces – simply the pure food. We’ve seen, for example, commercial frozen fruit with added sugar. This would definitely not be allowed. So if you’re buying frozen foods, always check the label. If it’s a whole food that has been frozen soon after harvesting or preparing or one you have frozen it yourself, then it’s fine. With regards to quantities this is very simple. The amount of frozen fruit and frozen vegetables is exactly the same as allotted on your plan. When weighing frozen proteins such as fish, meat or seafood, you should always have an extra 25g more than listed in your plan, as there is a loss of water during thawing. For example: if you have 125g fish listed on your plan then you will need to have 150g of frozen fish.
Metabolic Balance Blog 