As i know you know, you have to be careful with everything going into your mouth. Cheese, eggs, meat (pork, chicken, beef, fish etc0 are always safe where the meat and eggs have a TRUE zero carb count.
With the massive rise in popularity in ketogenic eating, there is also a massive rise in "keto friendly recipes for..." which aren't keto friendly at all. Carb counts on labels rarely represent whats in the food. For example, you can look at a quart of Land o' lakes heavy cream and it says "0" carbs but in reality, it has like 3.4 grams per tablespoon. You can taste the lactose by just touching your tongue to it.
The real question is more like "what can i do with eggs, meat and cheese?". Be careful not be baited into bad advice simply because people chose for no reason whatosoever to claim something is "keto friendly". Even if your goal is not weight loss, its still not a great idea to bounce in and out of ketosis if you spike your blood sugar or cause an insulin response.
Our ancestors didn't have "great recipes". They had a weapon. They had meat. They had dried meat. They had fire.
.... and for anyone with questions,... no, there were no vegetarians in our evolutionary history ... ever.