There are tons of great keto friendly brands of mayonnaise on the market today. You should be able to find a few at your local grocery store, or you can always order them online. I recommend Chosen Foods Classic Mayo or Keto Mayo, Sir Kensington’s Avocado Oil Mayonnaise, or Primal Kitchen Mayo with Avocado Oil. If you choose another brand, make sure you read the label to check out the nutritional information.