The broiler to its highest setting.
Broth, sherry, coconut aminos, Dijon, and garlic should all be brought to a boil in a small saucepan over medium-high heat. Simmer for five minutes on low heat. With salt and pepper, season to taste. Low-heat setting.
Horseradish and mayonnaise should be mixed together in the meantime.
Cover the chaffles with the mayonnaise mixture.
Shortly after dipping it, remove the roast beef from the warm broth mixture. Not to be cooked!
Between the four chaffles, distribute the drained meat evenly. Add the gruyere on top and place on a baking pan.
To melt the cheese, broil the dish for two minutes.
Include the warm jus with the remaining chaffles on top.