You can definitely eat a sandwich on a keto diet, but you will have to swap the classic types of bread – white, brown, multi-seed, sourdough, pittas, naan, and so on – for a keto alternative.u003cbr/u003eu003cbr/u003eThere are plenty of keto bread recipes online, and we have some of them in this article too. As for the fillings or toppings of sandwiches, any ingredient like deli meats or cooked meats is perfect, and so is cheese.u003cbr/u003eu003cbr/u003eWhen it comes to sauces, those like mayonnaise are great as they have little to no carbs. u003cbr/u003eu003cbr/u003eThe same goes for vegetables, with green leaves (lettuce, rocket, etc), tomatoes, and cucumber being among the best for a low-carb and keto diet.