Prepare the peppers: Wash the peppers and cut off the stem about 1 cm down to create a little “lid.” Remove and discard the stem, optionally remove the seeds, and keep the discarded caps - they can go into the sauce later
Prepare the barley: There's no need to cook the barley in advance - just rinse thoroughly and allow it to drain.
Make the filling: Place the ground pork in a mixing bowl and season with salt, pepper, marjoram, and paprika powder. Taste it before adding the egg - once it's seasoned to your liking, add the eggs and the rinsed barley, and mix thoroughly
Stuff the peppers: Form meatballs of filling and loosely fill the peppers - avoid overstuffing. Place the peppers upright at the bottom of a pot. From this quantity, you'll get about 6 stuffed peppers and 6 smaller meatballs
Add the extracts: Add the reserved pepper caps to the pot. Pour in 1.5 L of tomato juice and 0.5 L of water. Cover and bring to a boil. Once boiling, reduce heat and simmer (covered) for about 40-60 minutes. Barley needs a longer cooking time. When you feel it's ready, you can add the roux.
Prepare the roux (“rántás”): In a small saucepan, gently heat olive oil, add oat flour, and stir until it forms a paste-like roux. Once it starts to bind (not runny), take it off the heat and add it directly to the boiling stuffed peppers. Stir well to avoid lumps.
Sweeten to taste: Add a few drops of liquid sweetener (xylitol or erythritol) if desired. If the sauce thickens too much, add a splash of water. Taste the filling from one pepper - if the barley is tender, your dish is ready