Squeeze the lemon, collect the juice. Wash the fillet piece, pat dry and debone. Now drizzle some lemon juice over the fish and let it steep for 15 minutes. Pepper and salt the fish and add very little marjoram.
Then fry the fish briefly on both sides in the butter and place in the oven at 100 ° C. Deglaze the roast with a really generous dash of cream, add capers with a little stock and bring to the boil. Add the teriyaki sauce and a pinch of sugar to round it off. Let it boil down to the desired consistency.