Wash the leaves and remove the large stems. Cut into bit sized pieces.
Place in a pan and add a tablespoon of boiling water. Cover and simmer for one and a half minutes.
Tip the spinach into a colander and press down with a spoon to remove all of the water.
Season with salt and pepper and add a squeeze of lemon if desired.
Sautéed leaves
It's important to start with dry leaves, so if you want to wash them, dry well by patting with a large clean tea towel. Cut into bite sized pieces.
Heat a large frying pan over a medium heat and add a drizzle of olive oil. Add the leaves and stir fry for a minute or two until the leaves have collapsed.
Remove from the heat and season to taste.
Notes
Optionally you can also add some chopped garlic to sautéed spinach. You can also use butter for frying if you prefer, but take care that it does not burn.