Preheat the oven to 325°F (165°C) and grease and line a 9×5-inch loaf pan with baking paper.
In a large mixing bowl combine the almond flour with the yogurt, erythritol, lemon juice and lemon zest, eggs, baking powder and a pinch of salt. Whisk to get a smooth batter.
Transfer the batter into the pan and bake in the preheated oven for 45-50 minutes.
Allow to cool completely, remove from the pan and serve at room temperature.