Thanks I'll give some of that a try.
Low sugar granola , meat/veg/salad , as you say yoghurt. Like your crumble idea.
A few years ago someone produced this food list to get started on low carb. As you can see it doesn't only consist of salads.
You will need to buy a meter as people differ as to the effect of certain foods on their BG.
@Rachox has a guide to reasonably priced meters and strips.
You should set yourself a daily limit of carbs, mine is about 75g, many people are lower, some are quite a bit higher, then adjust it as you see results from the meter. You mention half portions but that may not be enough change if your original portions were large. My 75g is divided something like 10g breakfast, 20g lunch, 30g dinner and a 15g beer in the evening.
Beef Roast
Beef Steaks
Corned Beef
Ground Beef
Poultry
Chicken pieces, thighs, legs, wing, breast
Duck
Goose
Pheasant
Turkey: whole, breast, leg portions, or ground
Pork
Bacon
Ground Pork
Ham
Italian Sausage
Bratwurst sausages (lidl) great taste & normal sausage substitute.
Pork Chops
Pork Roasts
Pork Steaks
Pork Tenderloin
Sausages look for high meat content
Tinned Pork & Ham
Fish
Canned Salmon
Crab
Flounder
Herring
Salmon
Sardines
Scallops
Shellfish
Shrimp
Sole
Trout
Tuna Fish
Spices And Condiments
Chili Powder
Garlic Powder Garlic Salt
Horseradish
Onion Powder
Paprika
Parmesan Cheese
Salt & Pepper
Salad Dressings
Salsa
Soy Sauce
Vinegar
Worcestershire Sauce
Yellow and Brown Mustard
Low Carb Syrups and Sweetener
Non-Starchy Vegetables
Alfalfa sprouts (great on salads)
Artichoke
Asparagus
Avocado
Bean Sprouts
Bell Peppers (green, red, yellow, orange)
Bok Choy
Broccoli
Brussel Sprouts
Cabbage (Any)
Cauliflower (Great as rice or mashed potato substitute.)
Celery
Celeriac
Chickpeas
Cucumbers
Fresh Spinach
Flax seed (add to salads & things)
Flower sprouts
Garlic
Green Onions
Hot Peppers
Leeks
Lentils
Lettuce
Mushrooms
Okra
Mushrooms
Radish
Peas
Yellow Onions
Red Onions
Squash
Tomatoes/paste & Sun dried
Zucchini
Note; frozen is most the time better than fresh.
Fruit (most is ok, but best in small portions.)
with root veg those with an orange tinge to them eg carrots, sweet potato, swede are better that the white veg, but still have to watch portion size.
Fats / Oils
Bernaise Sauce
Hollandaise Sauce
Mayonnaise
Olive Oil
Peanut Oil
Sesame Oil
cooking spray
Coconut oil
Dairy and Non Dairy
Milk full fat.
Coconut milk
Cheeses (hard)
Butter/Ghee
Cream Cheese
Eggs
Heavy Whipping Cream
Heavy Cream
Sour Cream
Yogurt
Greek yogurt, plain, full fat.
Snacks and Other Goodies
Olives (black)
Peanut butter
Pork Scratchings
Dark Chocolate 70% or more Cocoa (Good when cooking)
Ryvita. (A good replacement for bread.)
lidl's Rivercote sesame crispbreads, ( lower carbs than Ryvita)
Tuc crackers
Nuts (that you like.)
Seeds
Chia seed (This thread shows the benefits of this magick like seed.
http://www.diabetes.co.uk/forum/index.php?threads/72819/
These little beauties can be added to almost anything, they can even be used as an egg substitute & thickening soups, sauces stews etc.)
Flax seed - similar to chia.
Cornflour (great for thickening & making yorkkie puds etc)
Almond flour
Coconut flour
Cinnamon
Oatmeal
Soya flour
Breads
livlife
Burgen linseed & soya
Low Carb Tortillas,
The higher the fiber & lower the carbs the better.
Try to avoid wheat based products as much as possible, including cereals