To roll out the pasta, cut the dough into 4 chunks. Take one piece and shape it into a rectangle (see photograph) and cut into 1cm slices. Use your hands (NOT floured) to roll out into a string. Go thinner than you imagine the pasta being - it will spring back a bit and also swell while cooking. Set each piece aside on a semolina dusted tray while you roll out the rest.
Prepare the sauce ingredients before you cook the pasta - it all happens quite quickly at the end.
Boil the pasta for 3-5 minutes (depending on thickness) until al dente - taste to check. While it’s boiling, make the sauce. Scoop up a mug-full (at least a cup) of pasta water to make the sauce - the gluten in the pasta water helps the sauce become silky and cling to the pasta.
To make the sauce: in a separate pot over medium heat, melt the butter and olive oil. Add the crushed garlic and sizzle for a minute. Add the spinach and a ladleful of pasta water (approx 1/4 cup) and use tongs to move around until wilted. Add the toasted pine nuts, parmesan and salt and pepper. Transfer to a high speed blender or food processor (vitamix or bullet blender or similar), add the basil and blitz on high until you have a cohesive green sauce.