Step by step
Make a sweet shortcrust pastry, mixing the sugar and lemon zest, and adding the eggs flour, butter and a pinch of salt
Tips
To make your own bitter orange marmalade, buy only Seville oranges, but remember that you can only get them in January and February.
Trivia
Elderflowers are used to make a perfect tea infusion to treat a cold and also have beneficial effects on the circulatory system.