No, you can’t eat hot dogs on the carnivore diet. Hot dogs are junk food, and they should not be part of any healthy carnivore diet or lifestyle. You can only eat organic sausages on the carnivore diet that don’t contain fillers.
Typically, a carnivore diet contains a high amount of protein and fat with low carbohydrates. In this case, eating the hot dog sausage with condiments but without the bun will likely meet your macronutrient requirements, and allow you to stay in ketosis because the sausage itself doesn’t contain many carbs.
On a cheat day, you could also eat the bun, and not sabotage your entire diet.
However, for the strictest and most extreme carnivore diet plans, not even a little amount of carbohydrate is tolerated. In this situation, you should avoid ketchup and mustard because a lot of condiments contain dextrose and some other ingredients not suitable for your zero-carb carnivore diet plan.
Other garnishes such as onions should also be avoided, due to the vegetable anti-nutrients they contain.
Hot dogs are high in sodium