Here is a quick and dirty list for all you newbies: (taken from DietDoctor.com https://www.dietdoctor.com/low-carb/foods). This is a great site and also has a lot of low carb recipes.
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LOW CARB FOODS LIST
FOODS TO EAT………………..
Meat: Any type: Beef, pork, lamb, game, poultry, etc. Feel free to eat the fat on the meat as well as the skin on the chicken. If possible try to choose organic or grass-fed meats.
Fish and seafood: All kinds: Fatty fish such as salmon, mackerel, sardines or herring are great. Avoid breading.
Eggs: All kinds: Boiled, fried, scrambled, omelets, etc. Preferably organic eggs. Top egg recipes
Natural fat, high-fat sauces: Using butter and cream for cooking can make your food taste better and make you feel more satisfied. Coconut fat or olive oil are also good options.
Vegetables that grow above ground: Cauliflower, broccoli, cabbage and Brussels sprouts, kale, collards, bok choy, spinach, asparagus, zucchini, eggplant, olives, spinach, mushrooms, cucumber, lettuce, avocado, onions, peppers, tomatoes etc.
Dairy products: Always select full-fat options like real butter, cream (40% fat), sour cream, Greek/Turkish yogurt and high-fat cheeses. Be careful with regular milk, reduced fat and skim milk as they contain a lot of milk sugar. Avoid flavored, sugary and low-fat products.
Nuts: Great for a treat (in moderation) instead of popcorn, candy or chips. Learn more
Berries: Okay in moderation, if you are not super strict or sensitive. Great with whipped cream.
Read the nutrition label in the grocery store.
No more than 5% of carbohydrates in any food item is a good rule of thumb.
Drink
Water – Try to make this your drink of choice, flavored or sparkling water is fine too.
Coffee – Black or with small amounts of milk or cream is ideal for weight loss. Beware of adding lots of milk or cream, especially if you drink coffee regularly throughout the day, even when you’re not hungry. But if you are hungry feel free to use full-fat cream.
Tea : yes, but milk is high carb. Try cream or milk alternative such as hemp seed milk, or almond milk
Alcohol: try to avoid or limit. It may stall your progress as it is metabolized first before any other foods. Empty calories.
Dark chocolate: Above 70% cocoa, preferably just a bit.
Avoid these high-carb foods:
Avoid sugary foods on ketoSugar: The worst. Soft drinks, candy, juice, sports drinks, chocolate, cakes, buns, pastries, ice cream, breakfast cereals.
Preferably avoid artificial sweeteners as well (here’s why).
Avoid starchy foods:
Starch: Bread, pasta, rice, potatoes, French fries, potato chips, porridge, muesli and so on. Wholegrain products are just less bad. Legumes, such as beans and lentils, are high in carbs. Moderate amounts of root vegetables may be OK (unless you’re eating extremely low carb).
Beer: Liquid bread. Full of rapidly absorbed carbs. But there are a few lower-carb beers
Fruit: Very sweet, lots of sugar. Eat once in a while. Treat fruit as a natural form of candy. Learn more
Watch out:
Be very skeptical of special “low-carb” products, such as pasta or chocolate. Unfortunately these products usually work poorly. They have prevented weight loss for loads of people. They’re commonly full of carbs once you see through the creative marketing.
Also, preferably avoid margarine. It’s industrially produced imitated butter with unnaturally high content of omega-6 fat. It has no health benefits and tastes bad. It’s also statistically linked to asthma, allergies and other inflammatory diseases.