5 essential foods for getting through winter on a low-carb diet: beef bone broth (warm and nourishing), spaghetti squash (low in carbohydrates, perfect as a «pasta» substitute), roasted cauliflower (versatile and crispy), avocado (healthy fats for energy), and sardines (omega-3s to ward off the cold).
The basic mistake is to demonize sweet desserts, which are occasional by nature. They are not what compromises long-term metabolic health, and if you feel like having one, you can enjoy it with great pleasure.