If you're going to try the keto diet, prepare yourself for a complete change in what you eat.
Keto is restrictive. The diet argues that losing weight involves maintaining ketosis, or the state at which your body metabolizes fat instead of carbohydrates as its primary fuel source. Proponents of keto say you can achieve ketosis best by consuming 80 percent of your daily calories from fat.
This makes eating bread, oatmeal, and even bananas extremely difficult to fit into what you consume each day.
If this still sounds like something you want to take on, you're going to need some ideas for what to cook (because good luck trying to eat keto if you frequent fast-food joints or sit-down restaurants).
Try this: scrambled eggs, cheddar cheese, and half an avocado. This is Sisson's go-to meal when he needs a quick breakfast. You can easily dress it up by adding bacon, butter, and your favorite low-carb vegetables, such as broccoli or spinach.
Try this: Mixed greens, bell peppers, celery, cucumber, half a tomato. Top with your favorite protein: salmon, chicken, steak, or hard-boiled eggs with bacon. Douse with a dressing made from healthy fats, such as avocado oil.
Try this: Seared grass-fed steak and roasted Brussels sprouts or broccoli. (Sisson advises keto newbies to keep it simple by cooking one protein source and one low-carb vegetable for dinner.)
Source : https://www.menshealth.com/nutrition/a25415088/easy-keto-recipes-meals/