1 garlic clove, crushed
1 lemon, grated zest only
20g/¾oz fresh sage leaves, stalks discarded
200g/7oz fresh spinach, washed and drained
360²µ/12½´Ç³ú 00 flour, or strong white bread flour, plus extra for dusting
sea salt and black pepper
100g/3½oz unsalted butter
4 free-range eggs
40²µ/1½´Ç³ú Parmesan (or a vegetarian alternative), finely grated, plus extra to serve
200g/7oz ricotta