Madeleine Hull
Starting a keto diet involves shifting your eating habits to focus on high-fat, moderate-protein, and low-carbohydrate foods to achieve a state of ketosis, where your body burns fat for energy instead of carbs. To begin, prioritize purchasing foods like avocados, nuts, seeds, and healthy oils such as olive and coconut oil for fats. Include protein sources like fatty fish (salmon, mackerel), eggs, chicken, and grass-fed meats. Stock up on low-carb vegetables like spinach, kale, broccoli, cauliflower, and zucchini, and consider dairy options like cheese, butter, and heavy cream. Avoid sugary and high-carb items like bread, pasta, rice, and most fruits, opting instead for berries in moderation. Planning and shopping with these guidelines will help you successfully transition into a keto lifestyle.
| Characteristics | Values |
|---|---|
| High in Healthy Fats | Avocado, olive oil, coconut oil, butter, ghee, nuts (almonds, walnuts), seeds (chia, flax), fatty fish (salmon, mackerel), full-fat cheese, and cream. |
| Low in Carbohydrates | Leafy greens (spinach, kale), broccoli, cauliflower, zucchini, bell peppers, asparagus, berries (strawberries, blueberries), and avocados. |
| Moderate in Protein | Grass-fed beef, chicken, turkey, eggs, tofu, tempeh, Greek yogurt, and cottage cheese. |
| Whole, Unprocessed Foods | Fresh vegetables, meats, fish, eggs, and natural fats. Avoid processed snacks, sugary foods, and refined grains. |
| Electrolyte Sources | Bone broth, leafy greens, avocados, nuts, seeds, and salted foods (e.g., olives, pickles) to maintain electrolyte balance. |
| Low-Carb Dairy | Cheese, butter, heavy cream, and unsweetened almond or coconut milk. |
| Natural Sweeteners | Stevia, erythritol, monk fruit, and xylitol for occasional use in keto-friendly recipes. |
| Hydration | Water, unsweetened tea, and coffee (with no added sugar). |
| Avoid High-Carb Foods | Grains (bread, rice, pasta), sugar, starchy vegetables (potatoes, corn), and most fruits (except berries in moderation). |
| Meal Prep Essentials | Pre-cut vegetables, hard-boiled eggs, cooked meats, and portioned nuts/seeds for convenience. |
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What You'll Learn
High-fat proteins: meat, fish, eggs, tofu
High-fat proteins are the cornerstone of a successful keto diet, providing the essential macronutrients needed to maintain ketosis while keeping you satiated. Among these, meat, fish, eggs, and tofu stand out as versatile, nutrient-dense options that align perfectly with keto principles. Each of these foods not only delivers high-quality protein but also packs a significant amount of healthy fats, making them ideal for meeting your daily macros without relying heavily on carbohydrates.
Let’s start with meat, a keto staple that offers both variety and convenience. Fatty cuts like ribeye steak, pork belly, and chicken thighs are superior choices over leaner options like chicken breast. For example, a 100-gram serving of ribeye contains approximately 25 grams of fat and 27 grams of protein, while chicken breast provides only 3 grams of fat. Ground meats, such as 80/20 ground beef, are also excellent for keto-friendly dishes like meatballs or tacos (using lettuce wraps instead of tortillas). When shopping, prioritize grass-fed or pasture-raised options, as they tend to have a better fatty acid profile, including higher levels of omega-3s.
Fish and seafood are equally vital, offering not only high-fat content but also essential nutrients like omega-3 fatty acids and vitamin D. Fatty fish like salmon, mackerel, and sardines are keto superstars. A 100-gram serving of wild-caught salmon provides around 13 grams of fat and 20 grams of protein, making it a perfect dinner option. Canned tuna (packed in olive oil) and shrimp are also excellent choices, though be mindful of portion sizes, as some seafood can be higher in carbs if breaded or fried. Incorporating fish into your diet 2–3 times per week can help balance your fat intake while supporting heart and brain health.
Eggs are perhaps the most versatile high-fat protein source, offering 5–6 grams of fat and 6 grams of protein per large egg. Opt for pastured or omega-3-enriched eggs, as they contain higher levels of beneficial fats. Beyond breakfast, eggs can be used in salads, baked dishes, or as a binder in keto-friendly recipes like cauliflower pizza crust. For a quick, fat-boosting meal, fry eggs in butter or coconut oil, or make a keto omelet filled with cheese, spinach, and avocado. Aim for 2–3 eggs per day, depending on your overall calorie and macro goals.
Tofu, often overlooked in keto discussions, is a fantastic plant-based option for those seeking variety or adhering to vegetarian/vegan principles. While not as high in fat as animal proteins, firm or extra-firm tofu can be marinated and cooked in high-fat oils like avocado or olive oil to increase its fat content. A 100-gram serving of tofu provides about 4 grams of fat and 8 grams of protein, making it a decent base for stir-fries or scrambles. Pair it with fatty additions like cheese, nuts, or full-fat coconut milk to meet your keto macros.
Incorporating these high-fat proteins into your keto diet requires mindful planning. Aim for a daily protein intake of 0.8–1.2 grams per kilogram of body weight, with the majority of your remaining calories coming from fats. For example, a 70 kg (154 lb) individual might consume 56–84 grams of protein daily, paired with 120–150 grams of fat. Track your macros using apps like MyFitnessPal or Cronometer to ensure you stay within keto ranges (typically 70–75% fat, 20–25% protein, and 5–10% carbs). By prioritizing these high-fat proteins, you’ll not only stay in ketosis but also enjoy a satisfying and sustainable eating plan.
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Healthy fats: avocado, olive oil, nuts, seeds
Avocados are a cornerstone of any keto diet, offering a creamy texture and a nutrient-dense profile that aligns perfectly with low-carb, high-fat principles. A single medium avocado contains approximately 20 grams of healthy fats, primarily monounsaturated fats, which support heart health and satiety. Incorporate them into meals by slicing them onto salads, mashing them for guacamole, or even blending them into smoothies for a rich, satisfying consistency. Aim for half to one avocado per day to stay within keto macronutrient goals while reaping their fiber and potassium benefits.
Olive oil, a staple of Mediterranean diets, is another keto-friendly fat that doubles as a versatile cooking and dressing ingredient. Its high smoke point makes it ideal for sautéing vegetables or searing meats, while its robust flavor enhances cold dishes like salads and marinades. Extra virgin olive oil (EVOO) is the least processed option, retaining antioxidants like oleocanthal. Use 1-2 tablespoons daily to meet fat intake requirements, but be mindful of its caloric density—each tablespoon contains about 120 calories. For optimal freshness, store EVOO in a cool, dark place and consume within six months of opening.
Nuts and seeds are portable, nutrient-packed snacks that provide healthy fats, protein, and essential minerals like magnesium and zinc. Almonds, walnuts, chia seeds, and flaxseeds are particularly keto-friendly, with almonds offering 14 grams of fat per ounce and chia seeds providing 9 grams of fat per tablespoon. However, portion control is critical, as nuts and seeds are calorie-dense. Pre-portion them into single-serve bags to avoid overeating, and opt for raw or dry-roasted varieties without added sugars or oils. Incorporate them into meals by sprinkling them over yogurt, adding them to baked goods, or using them as a crunchy salad topping.
While avocados, olive oil, nuts, and seeds are keto staples, their integration into your diet should be strategic to avoid common pitfalls. For instance, over-reliance on nuts can inadvertently increase carb intake, as some varieties contain higher carb counts. Pair these fats with low-carb vegetables and proteins to create balanced meals that sustain energy levels. Experiment with combinations like avocado and smoked salmon, olive oil-drizzled zucchini noodles, or a trail mix of macadamia nuts and pumpkin seeds. By diversifying your fat sources, you’ll not only adhere to keto principles but also enjoy a variety of flavors and textures that keep the diet sustainable long-term.
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Low-carb veggies: spinach, broccoli, cauliflower, zucchini
Vegetables are a cornerstone of any healthy diet, but not all are created equal when it comes to keto. Low-carb veggies like spinach, broccoli, cauliflower, and zucchini are essential for maintaining nutritional balance while keeping your carb intake in check. These four powerhouses offer a wealth of vitamins, minerals, and fiber without derailing your macros. Spinach, for instance, packs a mere 1 gram of net carbs per cup, making it a perfect base for salads or a quick sauté. Broccoli, with 4 grams of net carbs per cup, is a crunchy, nutrient-dense addition to stir-fries or roasted veggie medleys.
Cauliflower is the chameleon of the keto world, capable of transforming into rice, pizza crust, or even mashed "potatoes" with just 3 grams of net carbs per cup. Its versatility makes it a must-have for anyone looking to replicate carb-heavy favorites without the guilt. Zucchini, with 3 grams of net carbs per cup, shines in spiralized form as a pasta substitute or sliced into chips for a crispy snack. Each of these veggies not only fits seamlessly into your keto macros but also adds variety and texture to your meals.
Incorporating these low-carb veggies into your diet is simpler than you think. Start by dedicating a section of your grocery list to them and aim to include at least one in every meal. For breakfast, toss spinach into an omelet or blend zucchini into a smoothie. Lunch could feature a cauliflower rice bowl topped with roasted broccoli. Dinner might include zucchini noodles with a creamy spinach and cauliflower sauce. Snack on raw broccoli florets with a keto-friendly dip like guacamole or almond butter.
Portion control is key, especially if you’re tracking macros closely. A general rule of thumb is to aim for 2–3 cups of non-starchy vegetables per day, depending on your carb limit. For example, a day’s intake could include 1 cup of spinach, 1 cup of cauliflower, and 1 cup of zucchini, totaling roughly 7 grams of net carbs. This keeps you well within keto boundaries while maximizing nutrient intake.
The beauty of these veggies lies not just in their low-carb profile but in their ability to satisfy cravings and prevent meal monotony. Experiment with cooking methods—roasting, steaming, grilling—to discover new flavors and textures. For instance, roasted broccoli develops a nutty sweetness, while grilled zucchini takes on a smoky edge. By prioritizing spinach, broccoli, cauliflower, and zucchini, you’ll build a keto foundation that’s both sustainable and delicious.
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Dairy options: cheese, butter, heavy cream, Greek yogurt
Dairy is a cornerstone of the keto diet, offering rich sources of fat and protein while keeping carbs minimal. Among the staples, cheese, butter, heavy cream, and Greek yogurt stand out for their versatility and nutritional profiles. Cheese, for instance, comes in countless varieties, each with its own fat and carb content. Hard cheeses like cheddar, Swiss, and Parmesan are particularly keto-friendly, with less than 1 gram of carbs per ounce. Soft cheeses like mozzarella and cream cheese are also excellent choices, though their fat content can vary. When selecting cheese, opt for full-fat, unprocessed versions to maximize flavor and nutritional benefits.
Butter is another keto essential, prized for its high fat content and absence of carbs. It’s a perfect cooking and baking ingredient, adding richness to meals without disrupting ketosis. Grass-fed butter is ideal, as it contains higher levels of conjugated linoleic acid (CLA) and vitamins A, D, and K2. Use it generously in sautéing vegetables, spreading on low-carb bread, or even as a coffee additive in "bulletproof" style drinks. For those tracking macros, a tablespoon of butter provides about 11 grams of fat and 0 grams of carbs, making it a straightforward addition to any keto meal plan.
Heavy cream is a game-changer for keto dieters seeking creamy textures without the carbs. With just 0.4 grams of carbs per tablespoon, it’s perfect for enriching coffee, making whipped toppings, or thickening sauces. When using heavy cream, moderation is key, as calories can add up quickly. For a lighter alternative, mix it with water or use it sparingly in recipes. For those who tolerate dairy well, heavy cream can also be a base for keto-friendly desserts like mousse or custard, providing indulgence without the sugar crash.
Greek yogurt is a unique dairy option on keto, as it contains more carbs than the others but offers higher protein content. A 6-ounce serving of full-fat Greek yogurt typically has 6–8 grams of carbs, so portion control is crucial. To make it keto-friendly, pair it with low-carb fruits like berries or add nuts and seeds for extra fat. Unsweetened varieties are best, as flavored options often contain added sugars. For those who prefer a thicker consistency, straining regular yogurt can mimic Greek yogurt while reducing carb content further.
Incorporating these dairy options into a keto diet requires awareness of individual tolerance and goals. While cheese, butter, and heavy cream are nearly carb-free, Greek yogurt demands careful portioning. Experiment with these foods in various meals—cheese in omelets, butter in bulletproof coffee, heavy cream in soups, and Greek yogurt in snacks—to find what works best for your taste and macros. By leveraging these dairy staples, you can maintain ketosis while enjoying satisfying, flavorful meals.
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Keto snacks: olives, cheese crisps, nuts, dark chocolate
Olives are a keto dieter’s secret weapon, packing healthy fats and minimal carbs into a tiny, briny package. A one-ounce serving (about 5 large olives) contains just 1-2 grams of net carbs, making them an ideal snack for maintaining ketosis. Opt for plain, unstuffed varieties like Kalamata or Castelvetrano to avoid added sugars or fillers. Pair them with a slice of cheese for a quick, savory bite that satisfies both fat and flavor cravings.
Cheese crisps are the ultimate keto-friendly chip alternative, transforming shredded cheese into a crunchy, low-carb snack. To make them, simply bake or fry small mounds of shredded cheddar, parmesan, or mozzarella until golden and crispy. Each crisp contains less than 1 gram of carbs, depending on the cheese used. Experiment with seasonings like garlic powder or chili flakes for variety. Store them in an airtight container for up to a week, ensuring you always have a guilt-free snack on hand.
Nuts are a convenient keto snack, but portion control is key due to their calorie density. Almonds, macadamia nuts, and pecans are top choices, with 2-4 grams of net carbs per ounce. Avoid cashews and pistachios, which are higher in carbs. Pre-portion nuts into single-serve bags to prevent overeating, as even a small handful can add up quickly. For added flavor, roast them with a sprinkle of sea salt or cinnamon, but avoid sweetened or honey-roasted varieties.
Dark chocolate (70% cocoa or higher) is a keto-approved treat for satisfying sweet cravings without derailing your diet. A one-ounce square contains 3-4 grams of net carbs, making it a reasonable indulgence. Look for brands with minimal added sugars and pair it with a handful of nuts or a dollop of whipped cream for a decadent dessert. Keep in mind that moderation is crucial—limit yourself to a small serving to stay within your daily carb limit.
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Frequently asked questions
Focus on high-fat, low-carb foods like avocados, eggs, fatty fish (salmon, mackerel), nuts and seeds, full-fat dairy (cheese, butter, cream), olive oil, coconut oil, and non-starchy vegetables (spinach, broccoli, cauliflower).
Yes, most fruits are high in carbs, but you can include small portions of low-carb fruits like berries (strawberries, raspberries, blackberries) in moderation. Avoid bananas, apples, and tropical fruits like mango and pineapple.
While whole foods are ideal, pre-packaged keto snacks like nuts, cheese sticks, or keto-friendly bars can be convenient. Just check the labels to ensure they fit within your daily carb limit (usually under 20-50g net carbs).
