1 If frozen, defrost the spinach. If not, remove the stalks and wash it. Then, fry them for 3 minutes in a saucepan with the butter. Drain them by recovering their vegetation water.
2 Grate ¾ of the cheddar cheese. In a saucepan, mix the cream with the spinach juice. Heat and stir in the grated cheddar. Add the spinach, salt and pepper. Mix and keep warm.
3 Break an egg in a cup. Bring a saucepan of water to a simmer with the vinegar. Form a swirl in the center. Slide the egg in and cook for 3 minutes. Drain and start again with the other eggs.
4 Divide the spinach between plates, place a poached egg on top. Sprinkle with the remaining shredded cheddar cheese and chives.