For the smoothest texture, grate Swiss cheese from a block instead of using pre shredded cheese, which often contains starch based anti caking agents that can cause clumping and increase carbs. Keep the heat low throughout cooking because high heat can cause the cheese and fat to separate, leading to a grainy fondue that is difficult to rescue. If you prefer not to cook with wine, you can substitute unsalted chicken broth for part or all of the wine while still keeping the recipe keto friendly, though the flavor will be slightly less tangy. Leftover fondue can be cooled, refrigerated in an airtight container for up to 3 days, and gently reheated on the stovetop over low heat with a splash of broth or wine to restore its silky consistency. To keep net carbs low, stick with non starchy dippers such as roasted broccoli, cauliflower, zucchini, mushrooms, or sugar free sausages, and use pork rinds or keto biscuits made from almond flour instead of bread.