My next door neighbor’s parents are visiting from Spain. They brought a Quesada wrapped in a cool paper that listed all the ingredients.. It is a dessert that has a bit of lemon peel in it. Dense and delicious. I was invited to have a piece. Butter, eggs, sugar, flour, lemon zest, a pinch of cinnamon. Tastes reminiscent of a simple custard of childhood but different texture. It is made like this so it could be carried in a knapsack and last a long time, not spoil. Here is a photo of it.