Remove the back silver skin from the ribs and season with salt and pepper. Wrap in baking paper and cover with aluminum foil.
Put the ribs in a tray with a little water and bake in a pre-heated oven for 2 hours at 180°C (355 °F).
Peel the vegetables and cut into large pieces. Place in a heat-resistant pan with butter, salt, and pepper. Bake in the oven for about 45 minutes.
For the salsa, wash the greens and chop finely. Add lemon zest and lemon juice, olive oil, salt, and pepper.
Before serving, remove the ribs from the foil and let them brown in the oven for another 5-10 minutes. After taking them out, cover with the green salsa sauce.