First, went rather strict when I started in August 2012 and lost 15 kilo (>2 stones) in a year then became more liberal and gained app 6 lbs and it's been tricky to loose these. Felt I needed to get my burning mode back and now I've done strict again for almost 3 weeks and have my weigh in day tomorrow, the two first weeks 3,5 lbs (had a couple of misshapes first week).
Skaldeman is about choosing all stuff less then 5 gram of carbs/100 gram, you can a little double cream, cheese (ideally without carbs) creme fraiche and full fat yoghurt, but remember that dairies can stall the weight lost. Focus on fat and moderate protein, eating less then 9 gram carbs per day - ALL carbs included. There's also a ratio where you add carbs and protein and compere - Ratio = Fat/(protein+carbs) should be at least 1 or higher. There's version where you for a shorter time do less then 5 gram of carbs per day.
Usually i have fat coffee for breakkie with coconut oil and butter, about 5 hours later a cup of coffee with 1 tsp coconut oil and 1 tbsp double cream, app 3 hours later my main meal 200-250 grams fish, meat or sea food, butter or a butter based sauce some vegetables like broccoli, cabbage, spinach or asparagus (all of these usually fried in butter or salad with a small amount or pepper, sometime later I have a piece of cheese. If snacking maybe some pork cracklings, prefer clean ones like awfully posh or make brie puffs from president brie in the microwave.
I'm deliberately stay away from yoghurt and most other dairies nuts and berries (maybe a few raspberries or a couple of strawberries once a week). I'll probably try to stay on this for 6-8 more weeks hoping to shred 1,5-2 stones.