Spaghetti with spinach and pine nuts

A quick evening supper for two.

160g spaghetti
two big handfuls of spinach
2tbs pine nuts
25g unsalted butter
25g plain flour
about 250ml milk
1 clove garlic, peeled and bruised
Maldon sea salt and white pepper to taste
Freshly grated parmesan, to serve

Toast the pine nuts in a dry pan over a medium heat. Toss for a few minutes until they start to colour. Remove from the heat and set aside.
Wilt the spinach by pouring just-boiled water over the leaves. Set aside.
In a pan over a medium heat, melt the butter with the garlic clove. Discard the garlic and add the flour. Stir constantly to make a roux, then gradually add the milk. Cook, stirring, for ten minutes or so until the sauce is a smooth creamy consistency. Remove from the heat, add the spinach and season to taste.
Meanwhile, cook the spaghetti according to pack instructions (ideally, get bronze-die spaghetti, which has a rougher texture and will hold the sauce better).
Add the spaghetti to the spinach sauce, mix well, then serve into warmed pasta bowls.
Top with the toasted pine nuts and parmesan.