Pencas de Acelga Rellenas

Pencas de acelga rellenas are Navarrese, with La Rioja close beside them, and they belong to the vegetable kitchens of the Ebro valley. The green leaves of the acelga go one way, often into a potaje, and the thick white stalks become the dish: filled with jamón and cheese, closed like a little sandwich, battered, fried, and finished in tomato sofrito, the slow onion and tomato base that gives the sauce its sweetness.

The method that decides it is the first cooking of the pencas. They must be tender enough to fold around the filling without stringing under the knife, but not so soft that they collapse in the flour and egg. Boil them in salted water until a knife slides in cleanly, drain them well, and dry them. Wet stalks throw off the batter and make the oil sulk. That is not drama, only physics.

If you are far from Navarra, ordinary Swiss chard is enough, provided the stalks are broad and firm. If the stems are narrow, don't fight them; pair two small pieces around the filling and secure them with a toothpick. Use Serrano ham if you can, a mild cured ham if you can't, and a melting cheese that behaves in the pan. No hace falta haber pisado España. You need good chard, a steady hand with the batter, and a sofrito cooked until it tastes sweet, not raw.

My Margin for this one says only: dry the pencas twice. I wrote it after losing half a batch to a slippery coating. Do that, keep the sauce gentle, and it comes out. Siempre sale, si lo sigues.