So many factors can determine the set on a lemon tart, but it deserves a little practice to get the texture of the filling just right to indulge in that wonderful freshness that only ‘Tart Au Citron’ can offer at the end of a meal. Of all the influencing factors, I suggest the most important is to give yourself plenty of time, so that way if the filling doesn’t set you can refrigerate the tart for at least an hour or so before serving. This is one of the best fall back plans I can share!