Resting the batter for the full 30 minutes is non-negotiable for tender crepes; the first crepe is always a test and should be forgiven. Cooked crepes keep in the fridge for up to 2 days stacked between parchment, and freeze for up to 2 months. Reheat in a dry skillet to keep the edges crisp. For a dairy-free version, use full-fat oat milk and a good plant-based butter in both the batter and the filling. Meyer lemons make the crepes sweeter and more floral. Leftover lemon sugar is excellent on yogurt or stirred into tea.